Dyno test of FR Wilk ECU chip

[Tom #16]

I got a dyno run with the FR Wilk chip and the stock chip. You gain about 3ft-lbs mid-band with the chip. It's not a huge difference in my mind. I'll post them when I get a chance; maybe this weekend.

 

One caveat is that my MAF was probably altered and Wilk's chip assumes it is stock, so the results might not reflect the real performance of his chip.

[mfoley]

Did you change chips or use the switch in the FR Wilks kit?

[Tim Comeau]

Also keep in mind that the POC rules don't allow air flow meter mods, but the NASA rules do.

[Spec-944#70]

What mods can you do to the AFM?

[PeanutinCA]

What mods can you do to the AFM?

 

Tune it. Didn't you?

[Spec-944#70]

Yes I did but tuning is not modifying!! Just adjusted to create the correct air/fuel mixture. Nothing anyone can't do. Nice try!!

[PeanutinCA]

Oh ok, your right. I was thinking tuning, not modifying. You tuned, I would too. Not accusing anything.... unless..... you have something to ADMIT!!!!! heh heh, kidding.

[944-Spec#94]

Hey Dilly.... you're just like timmy and a Postmeister now!

 

I bet that will make Tim a little less special around here

 

 

On to the AFM...

Firstly if you have a MAF = Mass air flow= hot wire= illeagal. PERIOD!

 

, but I think you meant the stock AFM = Air Flow Meter = Flapper Door = legal.

 

Now you many not modify this unit, but can do two things. First is to repair it to proper function. The wiper tracks can wear can cause major driveabiltiy problems. FR Wilks website has instuctions on how to fix the AFM to ensure you are using fresh wiper tracks. No power will be gained, but you will return it to proper running condition.

 

You may also play with the adjustment screw under the black cover. This can be done to properly tune the Air Fuel Ratio. It really can only be done an a dyno with a wide band O2 sensor. Given we allow exhaust and intake modifications and theses cars are old minor tweaks to the AFM tune are needed to ensure proper A/F mixtures.

 

For those concerned about these allowances let me say that they do not enhance performance, but simply attempt to maintain proper operation of the engine. There is little to no power to be gained from even illeagal mods to the AFM as long as the intake area in the AFM is not changed. Any changes to this would be illeagal.

 

Tom,

If you so desire you may send me that dyno chart and I will add it to the 944-spec dyno chart listings.

[Spec-944#70]

Yeah what Joe said!!! You won't be able to modify and get power but if your AFM is not functioning properly (like mine was) you can regain lost power. Albeit not much!! FR Wilk states in his web site that his chip won't help a poorly running motor so you need to ensure everything is working up to SPEC's (there's that Spec word again). I noticed the best improvement with a new DME. After I rebuilt my head (yes it was shaved - but not that much as I still left room for issues in the future!!) I expected a better running motor. That didn't happen till I put in a new DME/chip. That gave me 15 HP on the dyno so I suspect my DME was not opperating at optimum. Since the guys who have tested chips only saw a few HP here or there I give my substansial gain to the fact my DME was crap.

My question is where can I go run my car (not street legal) without paying for track time as I want to ensure my car doesn't overheat before our next event? I've run it on my trailer for about 30 min reving the motor and that looks good but I'd like to get it on the ground and actually run it.

[944-Spec#94]

Eric,

The only reason your car overheated was due to the headgasket.

 

It was leaking and thus you were loosing water. After you lose so much water the car will overheat. Assuming your headgasket does not fail I would not expect your car to overheat.

 

PS... a cheap place to check is at a local autocross. PCA, SCCA or what ever.

[Spec-944#70]

Thanks Joe. I feel prettyr good about the car but I don't want to miss any more track time if I can help it. I got Timmee in my sights and I don't want my car to stop me from beating him!! I'll leave my skills of lack there of do that for me.

[Tom #16]

I took a closer look at the plots and have to alter my statements. The peak torque only increased 3ft-lbs, but in the 5-5.5k range it increased by about 7 or more ft-lbs. In one place this gave a 10hp increase.

 

So, I'd have to say the chip was well worth the money. My car could still benefit from some custom tuning on the dyno though.

 

Mark- I just used the switch.

[944-Spec#94]

Tom,

Send them both my way and I can overlay one on the other (along with the other charts).

[Tim Comeau]

Interesting.......

I viewed cracking the lid on the air flow meter and altering it in any way as "modifying" it.

You guys see that as just tuning it so........................

I'll be in the garage for the next few hours.

Oh, and Eric,...........by the time you catch up, I will have moved ahead again.

Ohhhhhhhhhh!!!!

[Spec-944#70]

That may be but I expect to see you at least down to 1:16's at the Streets. I hope to be down there also. It's one thing to catch you it'll be another to pass! I'm hoping you'll be too distacted trying to catch Dwain to notice me!! That's when I hope to slip by. Plus you have a bunch of us now gaining on you. You can only make little strides while we make bigger ones! Your days are numbered!! Maybe even Dilly will join us soon!!

[Tim Comeau]

Poor Dilly.........I miss his ugly mug already.

It's true. You guys have made bigger leaps and I hope to have some close, clean racing soon. I'll help you guys however I can. Just ask me.

 

I'll say it again, some of the best 944 racing weekends I've had are when Joe Paluch beat me all weekend! I could squeeze out some faster laps, but I was so on the edge trying to keep up with his superior car that I couldn't maintain that pace consistently.

Even when I went to AMP he beat me. I wish I had video of that racing! You be screaming and spillin' your beer if you saw that! I swear.

Good stuff.

 

And you know, ............I haven't even started to develop my car.

No Tire temps taken.

No rear shocks tweeked.

No alignment adjustments.

No AFM tuning,

No big compression ratio.

Skinny track width.

I just now put on some 400 lb springs........finally.

You guys are in for it.

CHEERS!

[Spec-944#70]

Blah, Blah, Blah!!! Just bring the Beer!!! You have a long list of guys waiting to give you a spanking!! You won't have the luxury of being able to make a mistake and still plan on winning!! We're all gunning for you. And I'll take you up on the offer as I now have a passenger seat. Anytime your willing to step in. Come on big boy!! You affraid?

[Tim Comeau]

You sad, sad monkey boy.

Afraid to get in the car with you? Remember I drove up to the Streets earlier this year ONLY to get in the car with you and help you go faster. I didn't even enter a car. Then I ended up picking up cones for the POC at the end of the day, too!

Yep. That was me. And I enjoyed it.

( I remember the first race we had together when the class was still brand new in SoCal. I lapped you TWICE! Not anymore, huh?)

I'll ride with you again, AND I'll keep the passenger seat in my car for the STS event, if it's at all possible. I may need the room to pack that CHEAP BEER KEG!

In any case, the 944 drivers WILL come out, and they will ALL drive faster.

THAT'S THE GOAL FOR THE WEEKEND.

Oh, and I'll try my hardest to set fastest lap. But that's secondary.

BTW, you cracked me up with your opening BLAH, BLAH, BLAH

 

At your service, same as it ever was.

[PeanutinCA]

Poor Dilly.........I miss his ugly mug already.

 

Zip it!!! I'm a sexy sexy man.....

 

P.Dilly. (keepin' it real. you can't touch this)

[PeanutinCA]

And in my earlier days...

 

 

Peircings are sexy.

[Tom #16]

Tim-

 

Thank God you got therapy- you obviously had some issues in your earlier days. Serious issues. Really Really Serious Issues.

[944-Spec#94]

Interesting.......

I viewed cracking the lid on the air flow meter and altering it in any way as "modifying" it.

 

Tim,

There is an adjustment screw for mixture(PS adjust at your own risk since you can really screw it up alot faster than you can make it better, need the car on dyno with wideband O2 to get it right) in there and the wiper tracks can be moved so that you are using new tracks vs the old worn out ones.

 

If you remember the Video of PIR I gave you from Jan of 2003? Well my slow downs in that race were due to the AFM running on worn tracks. Every so often it will lose signal and the DME would cut fuel. Not much fun.

 

Those are the two adjustments that can be made. Altering the contents so that the AFM performs out of normal operation.

[944-Spec#94]

I'll say it again, some of the best 944 racing weekends I've had are when Joe Paluch beat me all weekend! I could squeeze out some faster laps, but I was so on the edge trying to keep up with his superior car that I couldn't maintain that pace consistently.

 

And you know, ............I haven't even started to develop my car.

No Tire temps taken.

No rear shocks tweeked.

No alignment adjustments.

No AFM tuning,

No big compression ratio.

Skinny track width.

I just now put on some 400 lb springs........finally.

You guys are in for it.

CHEERS!

 

Tim,

Superior Car?

 

What? I have never taken tire temps, but did tell you my toyo pressures.

I had the car aligent once by Mr Chris Cervelli using is baseline set-up before had a chance to learn 944-spec details

Tuned AFM to produce less HP than your 22 car...

Stock compression ratio

 

Hmm I have been racing for 2 and 1/2 years and on my first 4 days EVER at Willow Springs I had 4 great races with you. Thanks to a couple pointers we those races tough, hotly contested and a blast. I knew any error and you have me. All 4 were won by me however. At AMP in your first trip you were multple seconds off the pace of myself and the Fast Az guys. New track to under slippery conditions and it we well known for us. To bad you could not get up to speed then.

 

Next time you can out you were up to speed, but circumstances made it tough. Busted R&P on saturday, Sunday's AM race on east loop was tight, but made artifcally so by the presenesce of traffic. Even so it was fun race. In afternoon race I had it in the bag until a spin and yellow by another car made things intersting for the last lap.

 

So Tim we have had some good races and I don't think I have a superior car. We have run close and proabably will run close again. I hope to make at least 1 or 2 trips to So-Cal next year for some runs. Not sure what tracks yet, but anything other than Big Willow are all new to me so you will have the edge in track knowledge. Maybe by the end of the weekend I can give you run.

 

PS.. .come to Arizona and thing will be a little different.

[Tim Comeau]

No,no,no Joe. I was combining 2 different responses in one post.

 

#1 was the fact that my car was inferior to yours when you came out here to race. I had 250 lb springs, stock front bar, no rear sway bar, No camber plates, still heavy, etc. I was just driving harder to keep up with you.

#2 was my threat to REALLY kick the butts of the guys out here since I've added the suspension to my car. I'm teasing them about thrashing them, and I really haven't started trying to optimize my car yet. Just teasing them.

My tranny 3rd gear failed, not the ring gear like we guessed. We're learning.

[PeanutinCA]

My tranny 3rd gear failed

 

What's your Trannies name and does he/she like you in a thong?