Steve Wong (911chips.com) is THE MAN!(+Headers/Dynamax Muff)
 

As a long time believer and very satisfied customer of SW Chips, I took it another step further... After adding OBX 1-5/8" Stainless Headers, and a 2 in/ 2 out Dynamax Ultra-Flow Muffler (17276) I contacted Steve and we met at a Dyno Shop where he custom mapped a new chip for my new exhaust set up. WOW!!!:eek: What a difference! The end result is 208hp at the rear wheel, which equals 244.7hp at the engine! The 3.2 motor is stock with the exception of the exhaust & chip.
Base numbers with the new exhaust installed:

SW Chip for stock exhaust: 226.5hp
SW Chip for headers: 231hp
SW Chip Custom mapped on dyno: 244.75hp

The Mad Scientist at work, with me anxiously observing... :D


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Wow!! :eek::D Damn, man. You're starting to make me want to change my tune about the headers and no heat.

Congrats Patrick! Roughly 20% more than the stock 207 at the flywheel advertised by Porsche.

I must add that Patrick's car sounds extremely good, and runs extremely smoothly from idle up thru rev range. I'd say it is running as good as a 911 can!!

His Dynomax is a lot quiter than the Flowmaster. I cannot wait to get moved to SoCal, so I can also employ Mr. Wong's skills in setting my chip from him up exactly as it should be, particularly with my new cams.

Money well spent, Steve is a great guy and know his stuff. Let's just hope that there is not bashing coming your way for posting the postive benefits of chip tuning ;-)

Great work Steve!

I'm as sure of it happening as I'm sure the the sun will rise in the East tomorrow. Some people just can't keep their mouth's shut.

I'm so jealous! :D
Good for you Pat!
I'll have to wait for Mr. Wong to come to Hawaii to have his touch on my chip!
His chip is the only chip mentioned worth getting at BA's class.

I plan on installing a set of TRE headers soon, and ordered SW's chip for a custom exhaust. However, I'm not sure this will have the same out put as my car on a dyno with Steve at the controls doing some massage work.

More hyperbole!!!!

Everybody knows you cant squeeze more ponies out of a chip.....

Kidding!!

We recently had a guy from Porsche Motorsports tweak the tune of our GT3RS.

He spent a few ours with the car on our dyno and got us 20 more hp

The headers look great in the photos. How did they fit up? I put a set of OBX headers on my wife's MINI, and they seemed to have good quality. Did Steve have any comments about them, or whether they added hp or not? I wonder how they compare to European Racing Headers.

Thanks everyone!

It just shows the added benefit of a chip that is custom mapped for your own car. Every car is a little bit different, and Steve is able to maximize what you have.
As you can see from the numbers I posted above, Steve was able to squeeze out an extra 14hp over what his header chip was able to do! This thing pulls like a freight train all the way to redline now!

I'll add my kudus to Steve Wong.

My 88 Targa with a SW chip, Monty muffler (1 in/one out, 75 mm tailpipe), cat bypass, lightened flywheel and clutch by Chris Powell, checked out at 206.8 RWHP on Alex Racz's Dynojet (Carburetor & Fuel injection Connection, Kirkland, WA). I can't imagine a more enjoyable ride. Wouldn't trade it for any 964 or 993. At age 77+, I still get a thrill out of driving it!

I'm waiting for the flames...:rolleyes: OBX are a Chinese knock off of the Euro Headers ($350 a pair.). My thoughts were to try them out, and if they break, put some Euro Headers on later... Dynamax Muffler was $180.

So far so good... I've put about 500 miles on them, 150 of that at full throttle at a Willow Springs DE. No cracks, no problems! I was a bit hesitant at first, but my mechanic talked me into them. They are stainless steel, excellent welds, thick flat flanges, and they appear to be very good quality. Good collectors, and no weld slag on the insides.

Steve was impressed, and said it was one of the cleaner installs he has seen in a long time. He felt that the headers helped, but more importantly the free flowing muffler. I have multiple close up photos of the headers. PM your regular Email if you would like me to send more pics.

Kudos to you Tincanguy!

At 77 + and still not grown up that is amazing....I hope I'm just as young when I hit 77!

Is that with a stock exhaust manifold too? Absolutely awesome!!!

Yes it is with the stock manifolds/heat exchangers. Couldn't get by without heat up here in Seattle.

Patrick. Awesome!! I need to start running with the big boys someday!!

Uh yeah Patrick's car sounds awesome. When you fired it up at Wahoo's I thought....huh nice idle sound...hey PatriBRRRRAAAAPPPPBRAAAPPPOPPOPBRRAAAPPP!! (Imagine me with my hair flying back cartoon style) :) . Really nice sound and great numbers!

Patrick,

Please tell me about the oil radiator suction line from the oil tank to the oil cooler. I'm assuming that is what it is...

Thanks,

Patrick, what size is the OD on the primaries on those headers?

Cheers

Compact oil cooler I purchased about 6 years ago for ~$225. That in combination with a cooler scoop up front drops the oil temp about 25 degrees in hot weather!

Didn't measure the OD. The ID where the manifold meets the head is 1-5/8".
Where the collector dumps out, I think the ID is 2". If you check out the earlier picture posted, you can see where the extension adapts to a 2-1/2" pipe into the muffler.

I guess I should throw my results out there too. 3.2, stock with SSI headers and GHL 2 in 1 out, 239Hp at the crank (engine dyno). We also tested a M&K and produced 4 hp less. The engine is also running new KB P&Cs which I have heard produce slightly less hp than Mahles but I bought them cheap on Ebay.

Are you running a SW Chip Bob?

I guess I should throw out that my original never opened engine has 162k on the clock...

Hey, thanks for the kudos guys! Those OBX headers look pretty well made. Patrick sent a bunch of pics of them and the miters where the primaries join are pretty good. It's basically an all stainless version of the European George headers. The O.D is 1 11/16", which measures 1 5/8" i.d.

Afterwards, I only drove the car two blocks up and back, and was very surprised at the top end power - it really rips and has fantastic throttle response. It's a lot faster than the dyno shows - I think this dyno had been reading low. Don't be surprised when Patrick pulls you 3 car lengths on the straightaways at the next track outing!

Here are some header pics Jeff~


at the collector, 1-7/8"
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at the head, 1-5/8"
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Thanks! Good pics.

How close are they to the rear shocks? I had a set of similar ones that I could not use because they rubbed on my coil over.....

Cheers

Tough to tell from the pictures posted... Plus, I guess it would make more sense to see it when the car is on the ground... When on the lift, it looked like there was about an inch or more clearance. I guess the coil overs take up a bit more room. I'll see if I can get my large arm under the car with a camera tomorrow... Sounds like a good enough excuse to escape from the dinner table tomorrow!:D

:)

Cheers

I am impressed, Patrick. Looks like I might have to add headers and your muffler to my list of mods. ;)

It's the cheaper way to go... $350 for headers, and $180 for the muffler!

Which dynomax is that?

I am hoping to pick up a set of these headers, if they clear my coilovers. I want to dyno them against my QSC ones that I have now. I also want to bolt up a set of Coast Fab mufflers to them.

Cheers

Dynomax 17276. Ultra Flow Stainless. 2 in / 2 out. With 2-1/2" inlets/outlets.
Very light too. I think it was under 16lbs.
I can't wait to see your dyno results! I haven't been following the progress of your rebuild Jeff...
Stock, mild, or wild on the rebuild specs???

Wild......

3.4 twin plug
10.5 CR
Mod "S" cams
Jenvey ITB's
Custom ported Jenvey manifolds
Race valve springs
Ti retainers
Headers
Boatailed case
ARP head studs
ARP rod bolts
Balanced pistons
Balanced rods
Microtech EFI with crank trigger and 6 dual tower MSD coils......

yada yada yada.....

The exhaust has been a challenge for me. Started with B&B/M&K too loud..... Bought Georges headers, didn't fit, now bought QSC ones and have another M&K on the way. Would also like to try these headers with Coast mufflers too!

In mid january it goes back to the dyno to for final tunning now that it is broken in.

STEVE WONG CONTENT..... I have bought and installed a few of Steve's chips over the last few years, every one has been more than pleased. Steve was kind enough to educate me on some advance curves for my motor and even sent me tons of specs and info to help get me started on the initial tune of the motor!! Great guy!

Cheers

Good God... My dream motor Jeff! :D
So I'm guessing the twin plug set up allows you to run the higher compression on 91 octane fuel?
I was seeking a light weight muffler that wasn't too loud, but also had good flow characteristics. I think I reached a happy medium with this muffler! Much quieter AND better flowing than Flowmaster. I've heard M&K's with stock exhaust manifold & a cat bypass in person, and my set up with headers & Dynomax is quieter.

Clearly from the power you are making, that muffler flows well!!

I am running it now on 94 octane which is readily available here locally. The ECU allows me to store 4 seperate programs which I will tune for different octane. When I venture into WA state for trackdays pump fuel is 91 or 92 at best but race fuel is available at the track, not sure what to expect at Portland, Thunderhill and Laguna when I get down there this summer.

10.5:1 with 98mm cylinders pretty much requires twin plug and I feel okay about running the 94 in it here. At the dyno they have some high octane fuel as well, I believe 100, so we will tune it to that as well. I can always back out a few degrees of timing at the track if good fuel is not available, takes about 30 secs to make the changes.

Cheers, merry christmas!

From a stock never opened 162k mile 3.2... :eek:

What is your hp goal out of this build?

Merry Xmas back at ya! You better hit the rack soon Jeff... That wake up for work alarm :Dis getting closer & closer...

cheatter! that's close to what the "Beast" has

Does anyone have experience with a SW chip in a 964 with the light weight flywheel? I know that going from the dual mass to the light weight version can create stalling issues so I'd like to know if SW chips can adjust for this.
TIA,
Grady

yes, suggest you email Steve. he has done chips for a number of our 964 cars.

First of all, thanks for the very informative thread on the chips, headers, and mufflers. Yes, the experience and comments on Steve Wong's chips. I also liked the "oil cooler" on I believe Patrick's car. I have a friend that runs one on his hand build '32 Ford Pickup and provides effective cooling. Patrick's number of cooling 25 degrees in hot weather is impressive (along with the frontal scoop).

I know I am going to get a Steve Wong Chip for my 1987 3.2 Carrera engine; I will run headers as described, and probably the free flowing muffler mentioned in the thread. Steve goes out of his way to answer and help fellow Pelicanites and does produce a great product.

What I am interested in is the cooler and the possibility of using it as the heating element for defrosting/heating duties. I was thinking of building a chamber around one or two of the coolers and route air to the air tubes going forward. I am thinking of using the normal air/heating source, route the oil into the the rear with air flowing over the cooler(s), and then to the normal heater/defroster ducting system.

I know it would take a long time for the system to provide heat but I am only planning on using the car on immediate to long haul trips.

I should mention the car I am building is a 914-6GT Replica of sorts. I have questions involving the oil cooling capacity for this type of cooler used in conjuction for heating/defrosting. I already have a modified engine cooler; will I have to install a front cooler? How does this affect the SW Chip performance?

I would appreciate comments involving headers, mufflers, SW Chip, Oil Cooler with heating system, etc.

I do apologize if I have "highjacked" the thread from its origination. Saw the installation of the headers, dicussion on SW Chips, and the "oil cooler" which got me to thinking about what my conversion package requirements would be.,

Thanks,
Steve Hurt

I have installed only one 964 SW chip for a customer, car was tiptronic. He loved it.

Patrick, I am hoping for around 300hp at the flywheel. It feels strong enough to me the way it is now (and we are no where near done with the tuning) so the number is not all that important, the throtlle response and character of it made the money worth it.

Cheers