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It has been some time, but some while ago I installed the chip (the manual was very clear) , and have had my rides of fun with it. The car really has a better throttle response, more bottom power and in the upper ref regions you really feel the extra power the chip creates. Now my 964 feels again like my former 3.2 did with that extra kick in the 4000 to 6000 rpm region.
Thanks very much for the good delivery and the good preparation of the chip.
Rob Van Njen
93 964 - Netherlands
Wanted to give you the report on the new chip.
thank you for sending the chip out right away and
for the excellent customer service. I would recommend
anyone to you for a quality product and service.
was a breeze. Just followed your directions for
the tricky parts and was done in no time at all
(I took my time and did not calculate how long it
for test drive (which turned out to be a 2.5 hour
Sunday drive). Performance on the car was up across
the board. Hardly any hesitation, Smoother idle,
torque felt higher and consistent across the rpm
range. I did not hit high rpm's (highest was about
5K) but pull was noticeably improved. Highway driving
is where I noticed the true improvements. For example,
in 5th gear at speed (70-80), give it some throttle
and she moves out with much improved speed and torque.
I do not recall the car responding that way before
the new chip. The car performed great in town also.
I wish I made this move to your chip years ago.
As I have seen it written, the car does wake up
dramatically with the chip. It feels as if you were
driving around a partially plugged muffler or catalytic
converter before the new chip. It seems your chip
has made a more efficient engine.
again for a great honest product. So far this was
a great purchase for the car. I wish I could say
that for all the items I have purchased for the
car over the years.
Kevin M. H.
I have a 91 cab C4 which is triple black. Everything I have done so far is engine and suspension performance upgrades.
Start with the Steve Wong chip, you will be very happy! He makes a very nice performance chip that quite frankly IMO is the best choice for my car. I bought the G pipe that eliminates the secondary muffler, and a straight through cat by pass that really gives it sound and grunt.
seattle is a great place to own a convertible....polish it in your garage when it rains!
91 964 C4
FWIW, I too have installed Steve's chip
and I too am completely satisfied with the chip
and Steve's knowledge and customer service. I have
the Dansk premuff and sport exhaust and the chip
just gave the car a nice kick in the butt. I don't
care what it dyno's at, it doesn't ping, get hotter
than normal, eat anymore gas, or cuzz me when I
step on it. But it does get up and go more/quicker
than it did. No problems noted here. Sounds to me
like a happy customer Loren. Give it a shot you
might be surprised.
I was at Pelican and came across info about
Steve W. I had put a Dansk premuffler and 1 in 2
out sport muffler on my 86 911. I had a Weltmeister
chip in it. That chip is junk! Runs to rich at Idle(
hard to pass smog) and was way too lean at top RPM.
The car felt like it just ran out of steam at 5900RPM.
Steve is a great guy and his chip is SO much better
than I had. Chips alone won't give you a lot of
HP, maybe 15 at best. Now my car pulls hard all
the way to red line and is a nice improvement. Next
project is a MAF from ProM. That should be another
nice improvement and I'll dyno the car at that point
and post results.
I got the chip yesterday, installed it last night.†
I put my Dansk pre-muffler on this weekend also.†
I'm impressed with the chip and the pre-muffler
I have a lot more low end hmph and seem to get up
to redline (ok, not redline, but close to it) a
lot quicker than I used to.†† My 'bucking' at low
speed/low rpm is gone as well.† I can honestly say
that I do feel a difference with chip and pre-muffler.†
I did take it for a short drive w/ just the premuffler
and the chip definitely improved performance.
My Dansk muffler is on back-order, but I expect
an additional small performance gain from the increased
exhaust flow it will allow (along with some needed
'sports car noise'!!!)
posted by Jeremy964
BTW I thought it was common knowledge that
Porsche delivered a detuned motronic system to cater
to the lowest common denominator...
couldnít agree with you more. I have used chips,
piggy backing and programming modifications on various
makes and models of cars. Without a doubt...Porsche
has the most detuned programming I have ever witnessed!
challenged Steveís programming skills.
He hit a home run as far as I am concerned.
Prior to programming I was embarrassed to
even use the term, "throttle response",
in the same sentence with my '87.
The car is now a joy to drive!
'87 Carrera Coupe
Guards Red/Cold A/C
O MAN!!! I can't believe it but I think this other
chip produces more power than the original chip.
Either that or I'm way too excited when I drive
the 911. I put in the new chip and just did a 20
minute run and it was incredible. I don't remember
the RPMs shooting so high so fast before on my 911
and the power felt instantaneous.
Am I just too enthused about these chips or did
you do something with the new chip to make squeeze
out more power? I think I could sum it up like this,
the original chip produced more power while still
being civilized. This second chip though feels more...
for lack of a better word, "brutal" but
in a good way. More raw and un restrained... exactly
what a race car should feel like.
Can you back up any of these observations or did
you give me a placebo? heh heh heh
Also, I did notice that the popping and cracking
sound that came from my muffler/exhaust before I
installed your chip went away.
'84 Euro Carrera Cabriolet - Slate
I received my chip from Steve last week and you are going to love the differance. My engine now idles perfectly and runs much smoother. Oh yeah, the added power is very noticeable.
Ice Green '77 Targa w/ 964 3.6
Gruppe B #78
have been running Steve's chips in my car for two
years now and very happy with them. He knows the
DME setup better than anyone I know and is one of
the nicest guys there is to work with.
Just another testimonial for Steve W's chip.
I put one in my stock 85 coupe last month and it
made a Huge difference in performance....the seat
of the pants variety. Along with the new Bilsteins
JW installed, the chip has been the best addition
to my car by far. MUCH zippier around town...no
more "Carrera lag" and she pulls like
hell! No predetonation. Best money Iíve spent period.
the post on Pelican...i think i need to get me†a
custom chip too : )† I am not too fond of the Europroducts
chip that came with the car.†
Noticed 2 things.† First the idle is high
at 1050 or so.† With the Europroducts chip, the
power is pretty flat across the entire†range with
no noticeable spike.† Is this pretty consistent
with your observations?
have a Euro Pre Muffler (off an old SC)
Single in Dual out 84mm tips
Swiss Cheese Airbox†
I installed the chip. WOW, it is great!
I love it!
might seam odd, at least it do to me but I have
only been a proffesional in computers for some 20
years now, so what do I know J.
I mounted your chip last week I had the DME out
of the car for approximately 30-40 minutes before
reinstalling it, as I understand this will be enough
to reset the box. The power increase did not impress
on me. For other reasons I had the battery disconnected
for 6 hours yesterday and when I after that took
the car for a spin after that it felt like I had
some 50 new horses kicking in my car. This is a
very big improvement and I didnít think that this
kind of improvement was possible in a non overcharged
I donít believe that I have 50 new horsepower but
it certainly feels that way. The engine is now so
much more responsible both in low and high register
and itís real joy to drive. I canít say that it
was especially boring to drive before the chip either
but it is a big difference with the new chip and
the engine wasnít that smooth when I accelerated.
Carrera - Sweden
I also just installed a Steve W chip in
my stock 85 Coupe...kept the factory rev limit intact.
Fantastic difference! The "lag" is gone...the
car spools up much more quickly....MUCH zippier
around town....the car "feels" much lighter
and much more nimble....highly recommended! Thanks
Got the chip installed! My car must have
been a real pig. The throttle response and overall
feel/torque seems to be greatly improved, more than
I have ever gotten from anyoneís chip. Certainly
more than the projected torque and hp increase would
dictate. Got up to operating temp and made numerous
full throttle runs with and without A/C, bumping
the rev limiter that kicked in at 6500 on my tach.
Prior to programming I was bumping the rev at a
registered 6250 rpm. I didnít experience any detonation
but ambient temp had cooled to 90 degrees at 50%
humidity. I will give you some feedback in the next
couple of days. When temps get back to normal.
Drove 225 miles today in combination, stop
and go, hwy and spirited hwy driving. It was 98F
with a heat index of 110F. Pretty darn humid. Lots
WOT runs through the gears. Topped out 4th numerous
times. Never got an opportunity to bury 5th. Ran
with the A/C on all day. Oil temp from just slightly
over the first hash mark to the 9:00 position. Didnít
get any detonation! :-)
wrote Steve the note (see above) about replacing
an Autothority chip with Steve's custom chip. As
I said in my note, there are noticeable performance
improvements in the low and mid-range RPMs. Overall,
I am very pleased with Steve's custom chip. His
"customer service" is world class.
have a K&N cone air intake system and Dansk
euro pre-muffler and SS sport muffler (one in, one
out w/84MM outlet). I have my idle CO set at 3.2%
using the Gunson CO Tester. Here in the mid-Atlantic
we have ample access to 93 and 94 octane gas; I
use Sunoco 94.
talking with Steve, his custom chip and my intake/exhaust
system set up should get my 3.2 ltr. engine close
to the euro spec engine's output of 231 HP. I have
never had my car on a dyno, so I do not have any
empirical proof on which to base my assumption.
again Steve. No relation, just a satisfied customer.
W put a chip in my 1986 Carrera and then I put on
a Dansk pre-muffler that I purchased from Pelican.
The big increase came from Steveís chip. The Dansk
pre-muffler made it a little more powerful but the
biggest increase came right after I drove away from
Steveís place. The price for a Steve W chip is a
great deal. It is well worth the money $230. to
perk up the power. The Dansk pre-muffler and new
bolts and nuts and gaskets from Pelican, $400. delivered.
I took it to a muffler shop and they put the pipe
in for $45. This was a week later, so I know what
I was feeling. Steve W chip, great deal, Dansk pre-muffler
was a bit of bread for not that much bang. Over
all, the car is much faster and as I keep driving
it. I find the rear 245 Goodyear F1s spin much more
in left turns from a light than before. The power
is as people have posted. I am not going to put
it on a dyno but the numbers must be higher. Thanks
Steve W chip--another convert
had Steve W install one of his modified chips in my
'86 911 this past weekend, and like everyone else
on this board, am very pleased with the results and
the customer service. First off, my car is bone stock,
except for a Flowmaster muffler. The new chip was
definitely noticeable during my 'test run'. It gives
immediate throttle response upon throttle opening.
Again, like others mentioned, not a tire-burning increase,
but a definite SNAP w/ acceleration.
"Wavey's" description in a previous
post hit it right on the head. Steve
was especially accommodating, and walked me thru
the steps of removing the DME box and replacing
installed a Steve W chip after replacing the stock
cat. and muffler with a Dansk Euro Pre-muffler and
70MM single outlet sport muffler. The SW chip definitely
smoothed out the power delivery, what a difference.
I have yet to really push the car but the driving
I've done says the $$ were well spent.
'88 911 Cab; Red/Black
W chip... WOW!
Targa has about 220K on it and has never been opened.
It burns a bit of oil, but is a strong car.
Just put in a Steve
W chip tuned for 93 and stock exhaust/intake.
this is easily the best $230 I have ever spent on
the car, or nearly anything else, although there
was that 3rd date dinner a few months ago...
I don't get the earlier 3K boost that I have seen
in other posts, but from 4K on the car just rockets
like it never has before, and the extra little bit
of redline is appreciated!
71 R/RS clone
hey Steve, got the chip, installed it. l
took the car for a spin and it seems to really pull,
coming up in first especially. One thing l did notice
also was that my car reached operating temp a lot
sooner then before I could attribute this to the
very warm weather we have today though, or the fact
that the "power box" fuel system unit
l took off, and the ARC2,were making the car run
WAY too rich, I donít know what l was thinking with
that crap. itís pretty hard to fool the motronic
into developing more horsepower by just adding more
fuel. Anyhow l just wanted to touch base and double
check on the chip. l know we went over this but
l just wanted to confirm everything (arenít Porsche
people detail oriented).my car : 1984 with headers/exhaust..msd/nology..big
bore t/body... mass flow conversion soon the polished
intake runners. Basically similar to your car, right?
So, my question is, when you remapped the chip what
did you change and at what rpm? Like, for instance,
the car really seems sharp at the upper end of the
rev range pulling in first. What did you do there?
That sort of thing. l seem to remember you stating
that with the free flow exhaust you would enrich
the mixture throughout the rev range to take advantage
of that. Thanks in advance for any info you can
give me on this Steve, and thanks for the chip........
highly recommend checking out some of the threads
on Pelican regarding Steve W's chips. I'm not unbiased
here, as I have one on my '88, but Steve really
knows his stuff, and has taken the 'best of' maps.
and the net result is a 'best of' customized chip.
Steve's prices are very reasonable, and I've never
heard of anyone who wasn't satisfied. One other
note...my customized chip is designed for a sport
muffler, euro premuffler, and assumes 92 octane
gas (or better). Even with all of this, the results
are not 'earth shattering', but you can definitely
tell a difference (...butt dyno) in the lower &
mid-range rpms. I'm not sure a chip alone (regardless
of source), is going to make that much of a noticeable
I too have purchased a chip from Steve W.
Very nice guy with great customer service. I had
a Weltmeister chip in my 86 too rich at idle and
way to lean at upper revs. Engine ran out of steam
at 5800. I put Steve's chip in and it pulled hard
to red line and was a nice improvement. Cost was
$170 cheaper than Autothority. You won't get a lot
of HP from chips maybe 15hp. Your not going to lose
7 HP by adding SSI and a chip. Dyno testing is the
only way to know exactly how much your making with
Just installed a Steve W chip after replacing
the stock cat. and muffler with a Dansk Euro Pre-muffler
and 70MM single outlet sport muffler. The SW chip
definitely smoothed out the power delivery, what
a difference. I have yet to really push the car
but the driving I've done says the $$ were well
'88 911 Cab; Red/Black †
I was an early..or "somewhat early"
user of Steve's chips and have been very satisfied
with the one he burned for me to accommodate my
mild mods. Good friend of mine was also convinced
to buy one too and his car had SSI's and a 28 pin
chip whereas mine had a premuffler and a 24 pin
chip. Both cars are 85's ...and we're both very
pleased with the results.
I had intended to dyno my car since the
mods. As a baseline, my 85 had dyno'd before the
chip at 200 rear wheel hp ( fairly stock 3.2..so
these are good numbers)...before I added the Euro
premuffler and Steve's chip. Here's where dyno number
can be misleading. If it's an inertial dyno, the
car is in 3rd or 4th gear and a rolling start at
3000 rpm is measured at full throttle until you
go past 6000 or 6500 rpm. The increase in drum rotation
speed with respect to time is a direct torque read
out which then gets mathematically related to HP.
This test says NOTHING about part throttle response
which Steve's chip improves by a considerable amount.
So although i think I'd be getting 216 rear
wheel hp or so...it really doesn't matter as it's
at least as strong as before with a much fatter
mid range torque and much better "tip-in"
throttle response, either from idle or in mid range.
A home run......runs fairly cool at track
conditions too, and I was worried about this. Richer
running = cooler but more advance curve = hotter
so I didn't know which one would win. Well, even
here it runs no hotter than before for DE days at
waste time looking for a "magical' inexpensive
power improvement. The BEST chip out there is one
from Steve W. No chip is going to give you substantial
power increases but Steve's helps the 911 idle smoother,
rev quicker, pull longer, and generally run better.
Spend the money and get the results.
Put the chip in today....about 10 minutes
after I got the mail. :) Excellent change in around
town driving. I haven't had a chance to really get
on it but 2nd gear accel. from 3K was great. My
car used to have sort of surgy acceleration. Now
it's seems to accel. quicker and smoother....alot
smoother. Also, cruising at 3K was nice and smooth.
My car wasn't too sergy at 3K but did have some
serginess. Rock steady now. I'd post something on
PP but that one post finally died so might be better
to let it go. Thanks for the great chip!!
Just received and installed the chip you sent and
I have to tell you that I am more than pleased.†
Like all your other rave reviews, I experienced
all the same improvements.† My Targa just plain
runs better - much more drivable lower in the rpm
range.† Thanks again.
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