[Z06] Dyno tunning with Halltech Stinger
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Instructor
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Dyno tunning with Halltech Stinger
I have dyno time set for Saturday . I will be installing a Halltech Stinger intake on my stock 02,z06. The guys from www.pcmforless.com will be on sit for programing the competer. Any suggestions or comments before tunning. 
Intermediate
Joined: Jan 2005
Posts: 32
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From: Tulsa OK
Good Luck with the Install and Tune. I just put a set of StainlessWorks Long tubes on my 04 and am now waiting till I can get a tune to put on the Stinger. I understand that many 02-04s throw lean codes after the stinger addition, so I am very interested in your results 
It would be nice if you could have them report on your STFT and LTFT values as well as O2 values, along with lbs/sec MAF numbers before and after the install and tune. I would expect the LTFT AVG values to go way positive, indicating a Lean condition after the Stinger install. Before my header install my values were around zero, now they are around 2.(Not Bad) on average. Apparently, on the 02-04s the unscreened MAF along with the high flow values of the Halltech make the Fuel Trims move just beyond what the PCM can adjust for, thus the codes. That's why it would be nice to know what these values are before the tune, yet after the Halltech install.
When I get mine done, I will try to get these as well.
Best of luck, and enjoy
It would be nice if you could have them report on your STFT and LTFT values as well as O2 values, along with lbs/sec MAF numbers before and after the install and tune. I would expect the LTFT AVG values to go way positive, indicating a Lean condition after the Stinger install. Before my header install my values were around zero, now they are around 2.(Not Bad) on average. Apparently, on the 02-04s the unscreened MAF along with the high flow values of the Halltech make the Fuel Trims move just beyond what the PCM can adjust for, thus the codes. That's why it would be nice to know what these values are before the tune, yet after the Halltech install.
When I get mine done, I will try to get these as well.
Best of luck, and enjoy
Le Mans Master
Joined: Jun 2001
Posts: 7,331
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From: Admit Nothing, Deny Everything, Make Counter Accusations.
* Leave the stock timing
* You do not have to zero the closed loop trims, just get
them near the stock values (before airbox install)
* Eliminate the IAT spark retard below about 250 degrees F
* Eliminate CAGS (raise enable temp to 300 degrees F)
* Reprogram the fans, install a cooler TStat. This will help to keep
IATs down. You can also bypass the TB coolant line.
* Remove TQ Management
* Address CCOT if you have major rich issues @ WOT
* You do not have to zero the closed loop trims, just get
them near the stock values (before airbox install)
* Eliminate the IAT spark retard below about 250 degrees F
* Eliminate CAGS (raise enable temp to 300 degrees F)
* Reprogram the fans, install a cooler TStat. This will help to keep
IATs down. You can also bypass the TB coolant line.
* Remove TQ Management
* Address CCOT if you have major rich issues @ WOT
Thread Starter
Instructor
Joined: Nov 2004
Posts: 124
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dyno tune with Halltech stinger
04z06, the Halltech intake will be here on Friday. My plan is to disconect the computer and let it relearn the increase of intake air. This should slove the code problem.
Thanks for your reply, Z06mickey
Thanks for your reply, Z06mickey
Drifting
Joined: Jan 2005
Posts: 1,419
Likes: 16
From: Oceanside, CA
Originally Posted by tmickey
04z06, the Halltech intake will be here on Friday. My plan is to disconect the computer and let it relearn the increase of intake air. This should slove the code problem.
Thanks for your reply, Z06mickey
Thanks for your reply, Z06mickey
Le Mans Master
Joined: Sep 1999
Posts: 5,464
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From: Private
Hey guys,
I am also having my car tuned this Friday afternoon at Phoenix Performance in PA. They have built the top T1 Corvettes in the SCCA over the past few years.
I have a Halltech, Kooks LT headers, with high flow random cats, x pipe, and stingers. So, with all this I must be running a little lean...hopefully the tune is worth the $600 they charge.
I am also having my car tuned this Friday afternoon at Phoenix Performance in PA. They have built the top T1 Corvettes in the SCCA over the past few years.
I have a Halltech, Kooks LT headers, with high flow random cats, x pipe, and stingers. So, with all this I must be running a little lean...hopefully the tune is worth the $600 they charge.
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Advanced
Joined: Dec 2004
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$600 is a little steep but I guess it depends on what your local market will allow. With those mods and a good tune, you should be in the 380 to 400 rwhp range.
I have heard that the later models have had code issues with CAI mods so a retune helps that. I had the original Halltech Sidewinder on my 01 before changing to the BPP Vortex Rammer. I was fortunate to not have had any code issues from any of my mods... CAI, long tubes, x-pipe, stingers or custom tune.
Good luck to both of you.
Don
I have heard that the later models have had code issues with CAI mods so a retune helps that. I had the original Halltech Sidewinder on my 01 before changing to the BPP Vortex Rammer. I was fortunate to not have had any code issues from any of my mods... CAI, long tubes, x-pipe, stingers or custom tune.
Good luck to both of you.
Don
Originally Posted by 95jersey
Hey guys,
I am also having my car tuned this Friday afternoon at Phoenix Performance in PA. They have built the top T1 Corvettes in the SCCA over the past few years.
I have a Halltech, Kooks LT headers, with high flow random cats, x pipe, and stingers. So, with all this I must be running a little lean...hopefully the tune is worth the $600 they charge.
I am also having my car tuned this Friday afternoon at Phoenix Performance in PA. They have built the top T1 Corvettes in the SCCA over the past few years.
I have a Halltech, Kooks LT headers, with high flow random cats, x pipe, and stingers. So, with all this I must be running a little lean...hopefully the tune is worth the $600 they charge.
Thread Starter
Instructor
Joined: Nov 2004
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Stinger Installed
Got the Halltech Stinger installed. I lift the battery disconnected for four hrs. NO CODES. I can fill the pull in my seat. The weather here in NC cancelled the dyno last Sat. We are rescheduled for next Tuesday. I’m looking for good HP gains after tuning the computer on the dyno.
tmickey
tmickey
Intermediate
Joined: Jan 2005
Posts: 32
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From: Tulsa OK
Thanks for the update. I put my Stinger on today. The Battery is disconnected right now. Hopefully, the weather will be better later this week so I can put some miles on the car and see if those dreaded codes pop up. I'm going to make an appointment to get this one tuned as well.
It should be interesting to see where the LTFT's go from here. With the headers they were running a little lean at 2-3. Hopefully, the won't go up too far
It should be interesting to see where the LTFT's go from here. With the headers they were running a little lean at 2-3. Hopefully, the won't go up too far
Burning Brakes
Joined: Feb 2002
Posts: 801
Likes: 1
From: Ashburn VA
With the 04 and Halltech your most likely going to get a code eventually. I installed mine and was doing fine for the first few weeks, then the weather in FL cooled off and i started getting codes. It has nothing to do with the computer relearning at least not in the 04. Has something to do with the screenless MAF and the air flow. There are others out there that can explain it much better then me. I got a good deal on a Dyno tune with our local group of FL Misfits and they tuned it right up. It was running pretty lean, but now its fine. With the Borlas, Halltech, and dyno tune it came in at 384RWHP. Slap a new set of long tube headers and I should be right at 400. It's real fun getting your car tuned. Have a great time!
Intermediate
Joined: Jan 2005
Posts: 32
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From: Tulsa OK
Installed the Stinger on Friday. Got the codes P0171 and 174 after about 40 miles of driving. I did all the relearn stuff, but as suggested, it seems that it is simply getting more air than the PCM can deal with. Now I'm questioning my install. Did I get everything tight? I'll check for leaks later today.
I will run a tap on it later to see what the LTFT's are averaging-obviously they are whacked. I made an appointment for later this week to get it tuned at LGM
I will run a tap on it later to see what the LTFT's are averaging-obviously they are whacked. I made an appointment for later this week to get it tuned at LGM
Burning Brakes
Joined: Jul 2000
Posts: 1,134
Likes: 1
From: Arlington Texas
Originally Posted by Nick 02 Z06
I only wish it was that easy. Pay close attention to your LTFT's!
Drifting
Joined: Jan 2005
Posts: 1,419
Likes: 16
From: Oceanside, CA
Originally Posted by thetorch
I would look at the STFT's. The LTFT's are only acted upon every 10 minutes. The PCM uses the STFT's for instant fueling changes. As long as your LTFT's are +5 to -5 your are good.
Seems to me that if your O2's are sensing a lean condition and adjusting your STFT's as a result, your LTFT's will also change as a result showing a trend over a certain amount of time.
Watching your long terms would be more realiable because it would show a lean or rich condition over time rather than the computer adding fuel because the air happens to be cooler at that moment.
Intermediate
Joined: Jan 2005
Posts: 32
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From: Tulsa OK
On the way down to LG Motorsports in Dallas the car was averaging 15-20 on the LTFT. The Dyno Tune showed the car was running very rich at WOT, as one would expect. They were able to get the car to just over 380RWHP with the tune. I'm pretty happy with that. THe AFR is pretty steady at 12.7 or so. They said she had some HP left, but to be safe left it at 380. I appreciate that.
My advice to anyone with Headers and Intake--> Get a tune It really makes a difference. LGM does great work. 
My advice to anyone with Headers and Intake--> Get a tune
It really makes a difference. LGM does great work.
Thread Starter
Instructor
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dyno tuning with Halltech Stinger
Took my 02, Z to the dyno last night. We make five pulls. The best RWHP was 358. I had just installed Halltech Stinger intake. I really though I would get a little more HP to the wheels. The engine temp. would run 225 degrees F, the oil pressure would go to 70 psi. Is this normal? We took the RPM to 62-65K.
Racer
Joined: May 2001
Posts: 265
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Originally Posted by tmickey
Took my 02, Z to the dyno last night. We make five pulls. The best RWHP was 358. I had just installed Halltech Stinger intake. I really though I would get a little more HP to the wheels. The engine temp. would run 225 degrees F, the oil pressure would go to 70 psi. Is this normal? We took the RPM to 62-65K.
I'm most impressed with the efficiency of my engine now, after the tune. 12.7 AFR pretty much across the board is spot on in my book.Take a look at the Dyno below. Before the tune, with the Stinger and the Long Tubes, mine was very disappointing. After the tune she really woke up.
You should consider a tune. At a minimum, check the fuel trims and AFR, you are probably running rich too. As you can see, mine was extremely rich.
Good Luck.
