3.2 performance chip

[Lorenfb]

Things you can do to 3.2 DMEs without spending any money,
which in some cases are done by those who sell performance
chips and charge money for:

1. disconnect the O2 sensor -
This is easiest way to make the DME more responsive
with better overall torque. Some chip guys disable
this function. Without the O2 sensor the 3.2 motor
always idles better and doesn't "hunt" at idle.
2. turn the internal DME switch (in box) to first position
from full CCW -
This increases fuel by 2.5 - 4.0 % overall. The same
as changing the fuel maps by the same amount.
3. adjust the air flow meter for better response -
By loosening the spring a few teeth on the wheel
and then adjusting the wiper arm to return to
the same rest point, you then have made the AFM
move faster (more accel fuel) during a hard accel
without increasing light load running fuel consumption.
This provides better performance increase than chips
which just incease fuel input still passes smog.

The above things are very simple to do and don't require
octane boosters nor will they cause pinging or detonation
without high octane fuels.

You may be causing damage to the Porsche engine even
though you don't hear pinging. Porsche setup the DME chip
for max power for all driving conditions without a potential
engine reliability problem. Very little can be done without
compromising reliability which happens as the timing maps
are pushed (more advance) to achieve more performance.

The following is from my last smog test in August
with an O2 connected and just mod #3:

HC (max) CO (max) NOX (max)
15mph 27 ( 116) .06 (.74) 28 (791)
25mph 20 (91) .05 (.62) 30 (730)

For those that are using a performance chip, compare
these numbers to yours.

If a performance chip does not cause a smog test
failure and produces; at least 5 - 10 hp increase to the
rear wheels, better throttle response, no pinging,
and uses standard gas station high octane, then it
is worth using. Few, if any, chips pass this criteria.

Good Luck
Loren
'88 3.2

[VenezianBlau 87]

Howdy all:

Anyway, here's my box opened up this evening in prep for the Steve W. chip. Since mine is an '87, I had to verify 24- or 28 pin prior to ordering.

Changes this summer:

SSI HE's (with O2 sensor on left side)
GHL 2-in 1-out
scrapped auxilary heater blower and ducting/new block off plate
scrapped A/C system
new MAF sensor and idle stab. valve

I'm hoping for quicker throttle response. Even levering at throttle body, slight lag time.

Note: Losing auxilary heater motor/ducting reduced engine temps around town this summer. No surprise with more air over cylinders.

The SSI's really transformed this machine. I ran a bypass pipe, but it was nothing compared to the switch to SSI's. I also ran a new stock 2-in 1-out muffler with the SSI's and I wonder if there isn't something to having a little backpressure to get going. However, the GHL is so lightweight and quick at higher rpms I hate to switch back.

Enough ranting...

Bob



Factory chip is at tip of screwdriver

[Steve W]

So much controversy .... how much is Porsche hp going for these days, about $100-$150/hp? If so maybe I should be charging at least $1000 for a chip instead of $230. So if my chip increased the Carrera's power by 2.3 horses, do you think anyone would rave about it? How much power do you think it takes to create a difference that can be felt, with standard pump gas, and no detonation, much less be raved about? 5? 10? 15? Well then going by Loren's statements, the chip is already worth it.

Shaun, if you need a stock chip for a dyno run, just let me know, I'll ship it to you - and you can keep it as a spare.

SC Pilot, only 911s 84 and later can be chipped. All previous versions had fuel and ignition systems that were mechanically controlled, and not computerized.

I have come to the conclusion that some people will never be satisfied. Loren it would be nice if you could exercise some patience and respect to the members of this forum that have promised their dyno runs. It has only been a few weeks, and believe it or not, many of us have lives other than Porsche and such things are not free.

Loren, going by the advice you are giving the forum members, I assume you also use hammers and monkey wrenches to work on your car. I would expect more finesse from you than that. What you are effectively doing is putting a JC Penny tie with a Armani suit. Everything you are advising, disconnecting the O2 sensor, turning up the fuel quality switch, and loosening the afm spring will only serve to foul the cat, destroy the O2 sensor, create excessive emissions, produce very lousy fuel economy, and cause excessive fuel wash into the motor, accelerating wear of the valve guides and dilution of the motor oil. Not only that, the car will be too rich where it's not needed and not rich enough where is needed. What sense of false economy are you trying to instill? You may be too cheap to spend $230 to do it right, so you want to pay for it in the end by having to rebuild the motor for accelerated wear? Or are you also trying to start a new business rebuilding Porsche motors?

Assume what you want, but for those cars that have an O2 sensor, it is not disabled and functions to maintain a stoichiometric mix at cruise and light throttle conditions, for good fuel economy and emissions, and none of the problems your approach will produce. In addition, I don't care what you say, but Porsche tuned the cars to run on 87 octane fuel (Bruce Anderson - Porsche 911 Performance Handbook, pg. 174). This means that there is room to improve the efficiency of the ignition maps without detonation by optimizing them.

[Shaun @ Tru6]

I can't believe the tone of this thread! There really should be no controversy here. It's very simple:

You buy a chip from Steve;

You plug it in;

Your car is faster (significantly) and runs better.

But I think the best part is the quality of Steve's customer service. He's one of the good guys in a market full of scams and half promises.

Steve, thanks for your offer. I will make some time to plug my old stock chip into my spare DME with the mystery chip. Never thought I'd be looking forward to Oct. 4 so much.

Steve, how about a chip for the MFI in my 2.0 E? : )

[Mark sP]

I am in the UK, and have a stock Euro 3.2

I have just ordered a chip from Steve. He has been a great chap to deal with so far.

I look forward to experiencing the results.

[MOMO3.2]

Steve is a great chap that makes a great chip!

Mike

[Sonic dB]

The O2 was disconnected on my car for about a month earlier this year... car ran like crap and got 16mpg tops. With new O2 in, car gets 24mpg.

I vote for O2 in and Im saving my money for one of Steves chips.

[movin]

Just curious here, is there room for modifications to improve performance on the air flow meter (box) also? Lets don't rule this one out until there's a little more discussion. I'd like to hear if anyone has done the mods and what were the results. I suppose a chip would naturally need to be customized for any air flow meter mods, but the results may be even better! What do you think?

[kepperly]

This Steve Wong chip thread has excited me to the point of sending Steve an Email to ask what I could expect from my 87
Carrera. I already run 93 octane, have a Bursch cat bypass
and Bursch muffler with a cone filter. It has had three chips in it so far with the last, an autotority that I've been happy with. Anyone have this combo that they changed to the Steve Wong chip and what did you think? I am after reading alot about filters about to go back to stock with the stock Porsche filter and just cut a couple of holes in it. I figure I could sell the Autothority chip and Cone air cleaner for enough to just about cover the S/W chip.

Keith Epperly

[brcorp]

From Steve Wong's 911 CHIPS web site, "Guaranteed to outperform - even your current performance chip, all chips have a 100% satisfaction guarantee."

So where is the risk?

Bill
1987 911 Carrera Coupe
with a Steve W. chip sitting on my desk waiting to be installed!

[toolman]

Hey Loren, Did you ever even try one of Steve's chips or are you just being a huge wet blanket about all of this?

[TedSlick]

$230 jumps to $280 in just a few hours. I'll give it a go...think I got in under the wire.

[Zaususa]

Originally posted by Brett@pcc
Looking to put a chip in an 88 Carrera. Wondering if anyone has any suggestions on which to use? Thanks!
Brett@PCC

Brett give me a Call @ 213 383 0149, regarding the 1969 Black Slant Nouse Porsche I had on your Yard. Since 911pcc moved from Venice Ca. dont know anithing about my car and you never call So I need it back.

If some body have any information about 911pcc or Brett Walker please call or send a message.

Thanks Folks!

[Jay07]

I have had the Euro chip installed in my car for about 5 months.

I opted for the more aggressive chip - so I would be able to feel the difference.

Steve's chips work - I really don't know what all the fuss is about.

I get better throttle response
The power is noticible from 2000 rpm
My car feels a more lively (or even twitchy when pushed)
Easy to install
Great customer service / returns policy (ask Steve how many chips have been sent back)
All for £140

My guess is a 250 bhp 3.2 Carrera (with other mods)
0-60 in 5.0

No brainer

[bento]

what about higher mileage examples? anyone out there stick a steve W chip into a car with more than 150K on the clock. same, positive only, results? any threat of increasing oil consumption.

db in TKO
(contemplating 5000+ miles away from my car)

[carreradpt]

I have had Steves chip in for some time now and I don't care what any dyno would say, the car is a better performer. Steve is fabulous to work with and he stands behind his product completely. I highly recommend him and HIS chip.