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Old August 24th, 2005, 11:44 PM   #1
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SIRSIG Dyno...

A few weeks ago i had my car dynoed at Brainstorm Performance in west L.A. It was in a dynamic dyno from australia (two rollers). Base run was i think 225whp I told them what i have and i asked them why so low, and they said that their dyno is a performance tuning machine and it's not a dyno jet machine that can only measure whp that's why is low he said give a little time to tune and after we conduct some tuning it will go up. Then at the end of the day it went down to 215whp and the tech said, he think that i broke something in the engine giving this as a reason why i'm pulling low numbers. Right now the engine sound is like a funny car ready to take off and the engine idle started to go up and down. they installed the Unichip while the V-AFC was still there and tuning the car w/ it! the tech. was giving me major attitude and smart a$$ answers the whole time during dyno that's why i left him alone thinking that they are Unichip certifide "tuner" and they know what they're doing. I told the guy, to let me know if he's going to put the Unichip before the tuning, but he did not informed me. The car still runs OK, TCS lights on, and the check engine lights on, tested the alternator, still fine. no clunking sound, some ticks maybe the valves, but it emmits loud exhaust type sound under the engine. After that dyno i dont drive the car in high end so it wont get worst...

Questions are:

1. Did i blew a head? bent a valve? gasket leak?
2. Why am i getting low numbers?
3. Is it because of the dyno machine?

help me out...

BTW anybody know a shop around L.A. that knows how to tune a Unichip?

http://videos.streetfire.net/Player....A-796CE3F1D443

Last edited by SIRSIG; August 30th, 2005 at 02:36 PM..
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Old August 25th, 2005, 12:46 PM   #2
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225 low? I guess you have a blower. Dang tooners. I'd just say take it somewhere else. If you post in the SoCal section you should fine a tuner fast. Maybe Toby knew someone.
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Old August 25th, 2005, 12:53 PM   #3
 
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what mods do you have that your pulling 225 whp and you think thats low?
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Old August 25th, 2005, 01:47 PM   #4
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Quote:
Originally Posted by efranklin
what mods do you have that your pulling 225 whp and you think thats low?
Comptech sc w/ CL-S hb pulley
Comptech headers
2.5" down pipe
CL-S tb and cams
HKS ground wires
Trust exhaust (aka Greddy)
Unichip
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Old August 25th, 2005, 03:07 PM   #5
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There is certainly something going on:

Unichip w/VAFC is a no no.
You need dynojet with SAE correction to compare to us. With your mods you should be between 250-260whp. Select location near you but I'd go there just for independant dyno once Unichip completely tuned on whatever machine they use.

Ask gme2001 or MrV6 for Unichip certified tuners. Also, is blower belt tight, what boost do you see at WOT, what is fuel pressure both at idle and at WOT? Are you running on stock Honduh tranny? Pull your CEL code and find the description (Autozone).

These are the first things I'd check.
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Old time [email protected] . Best trap - 123.4mph


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Last edited by 02AV6; August 25th, 2005 at 03:33 PM..
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Old August 25th, 2005, 03:21 PM   #6
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I dynoed on a dynamic dyno before and was about 25whp short of where I was suppose to be. I ran 167.9whp with full bolt-ons, CL-S cams and tuned. SRT-4 that day ran only 202whp also and those usually run 230whp stock. Preludes with full bolt-ons + cam gears + tuning only ran 160whp also.

With that being said, I also ran @ a local dynojet and only got 172whp .
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Old August 25th, 2005, 06:23 PM   #7
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Quote:
Originally Posted by 02AV6
There is certainly something going on:

Unichip w/VAFC is a no no.
You need dynojet with SAE correction to compare to us. With your mods you should be between 250-260whp. Select location near you but I'd go there just for independant dyno once Unichip completely tuned on whatever machine they use.

Ask gme2001 or MrV6 for Unichip certified tuners. Also, is blower belt tight, what boost do you see at WOT, what is fuel pressure both at idle and at WOT? Are you running on stock Honduh tranny? Pull your CEL code and find the description (Autozone).

These are the first things I'd check.
yeah, absolutely true about the Unichip and V-afc, but they didnt do what i want which is tuning the s/c on v-afc first atleast a couple of run (per request on this board) then remove v-afc before installing the Unichip for tuning... i also didn't have a chance on asking too many questions (or even look because of insurance reason) because of the techs attitude. i dont want him to messed up my car. well, but in the end sh!ts happened...

i have stock tranny.
boost and fuel pressure didnt saw (see above reason).
how tight the belt should be?
the TCS , well the tech sez it went on because of the dyno runs and he said it will go away after driving it around... 3 weeks later and its still on.

if it was down to 25whp on this type of dyno, i am actually running 250 then! but what concerns me now is the noise down the engine and some ticking. also that up and down rev.

Quote:
Originally Posted by BlackV62K2
I dynoed on a dynamic dyno before and was about 25whp short of where I was suppose to be. I ran 167.9whp with full bolt-ons, CL-S cams and tuned. SRT-4 that day ran only 202whp also and those usually run 230whp stock. Preludes with full bolt-ons + cam gears + tuning only ran 160whp also.

With that being said, I also ran @ a local dynojet and only got 172whp .
thanks. and pls give me more input.
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Old August 26th, 2005, 06:25 AM   #8
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Quote:
Originally Posted by SIRSIG
:
but what concerns me now is the noise down the engine and some ticking. also that up and down rev.



thanks. and pls give me more input.
I have that same problem but I'm not supercharged. When I got my last transmission I took it to the dealer and it didnt sound like that but when I got it back it sounded horrible. I complained and they look the car over numerous times and they say its my exhaust. Taken it to a couple of other shops(which agree that its not normal) and still noone has been able to tell me why.
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Old August 26th, 2005, 02:46 PM   #9
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I would remove Unichip (for now), I hope VAFC is gone, just keep ESM. And you are running on 91 octane, correct?.

You need boost and FP guages and what was your AFR?
Seems you went to bad tuner and I don't understand why VAFC was used along with Unichip. Are you using larger injectors? If not, VAFC is a complete waste. Stick to Unichip, find authorised tuner on their website (unichip.us) and go from there.
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'06 GTO 4-speed AUTO (Monaro conversion)
New setup: Forged 408ci (6.7L) All-motor coming - 53Xwhp/50Xwtq
Old time [email protected] . Best trap - 123.4mph


'11 BMW X5 twin-turbo
'02 J32A2 AV6 - [email protected] (sold)
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Old August 26th, 2005, 07:20 PM   #10
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Quote:
Originally Posted by 02AV6
I would remove Unichip (for now), I hope VAFC is gone, just keep ESM. And you are running on 91 octane, correct?.

You need boost and FP guages and what was your AFR?
Seems you went to bad tuner and I don't understand why VAFC was used along with Unichip. Are you using larger injectors? If not, VAFC is a complete waste. Stick to Unichip, find authorised tuner on their website (unichip.us) and go from there.
Unichip removed. i have boost, oil, a/f, and egt gauges. V-AFC is still connected, but will be taken away tomorrow at ccautotuners. How are we gonna tune this s/c without at least a piggy back? do we need to adjust the FPR to tune it?

I was able to get up the boost upto 6psi one time while driving, is that a normal psi boost for CL-S HB pulley?
A/F gauges going back and forth. (lean---rich) but most of the time rich up top.
I'm using stock injectors.

dyno will be prioritized later after diagnosis of the car.
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Old August 27th, 2005, 06:41 PM   #11
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Adjust FPR for proper A/F. Most s/c CL-s pulleys are run a little lean on the top. Check belt tightness!!!
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Old August 29th, 2005, 10:18 AM   #12
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Increase FP on your FPR to about 34-35psi at idle, and remove VAFC. It's a waste on stock injectors as it creates no benefit at all. Stick to Unichip only and tune it at authorized facility with 91+ octane. And CLS HBP should show between 7-8psi with tight blower belt.
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New setup: Forged 408ci (6.7L) All-motor coming - 53Xwhp/50Xwtq
Old time [email protected] . Best trap - 123.4mph


'11 BMW X5 twin-turbo
'02 J32A2 AV6 - [email protected] (sold)
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Old August 30th, 2005, 02:35 PM   #13
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what is the size of the belt? i add the video of the dyno run (more will be posted upon request). Serge, i want you to listen to the very last, and give me your opinion.

http://videos.streetfire.net/Player....A-796CE3F1D443
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Old August 30th, 2005, 05:27 PM   #14
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Blower belt I use is 24.5mm length and try to post Dyno plot to see your power curve and AFR. Video doesn't tell much since it's far away but to me the car hesitates on low-end or just seems that way. BTW, did they do in 3rd gear?

Actually, I don't like Dyno Dynamics only for a reason - it shows unreal better numbers than actually is. Here is an example:

Look at this SC G35 who ran on 2 dynos. One on Dyno Dynomics (384.6WHP) then the very next day on Dynojet (340WHP) as reported in same ambient temps. That's a lot of difference and perfect thing for bragging rights, thus I prefer Dynojet with SAE correction. Also seen people put STD which is about 3 % higher or so.



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'06 GTO 4-speed AUTO (Monaro conversion)
New setup: Forged 408ci (6.7L) All-motor coming - 53Xwhp/50Xwtq
Old time [email protected] . Best trap - 123.4mph


'11 BMW X5 twin-turbo
'02 J32A2 AV6 - [email protected] (sold)

Last edited by 02AV6; August 30th, 2005 at 05:33 PM..
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Old August 30th, 2005, 05:58 PM   #15
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I actually got lower numbers on a Dyno Dynamics. Numbers were slightly higher on a Dynojet for me.
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Old August 30th, 2005, 07:43 PM   #16
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lol U 2 R confussing me .
it was on 3rd gear.
i dont have a print out coz they did not finish the tuning. (i didnt pay).

i just spoke to Chu of CCauto he said one cylinder is down spark plugs are all burned (i have IK22) and pressure drops, meaning blown engine? demet! He said it must've be the dyno runs, the engine was abused to much .

your belt size... is that the right size for the s/c cl hb combo or you need to make adjustment because you have custom size pulley?

and BlackV62K2... do you have close up picture of your CL-S HB pulley? pls post it. thanks.

Last edited by SIRSIG; August 30th, 2005 at 07:47 PM..
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Old August 30th, 2005, 07:46 PM   #17
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Hmm, I'm going to be running IK20s with my SC + CLS HBP. IK22 maybe too cold?
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Old August 30th, 2005, 08:24 PM   #18
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I think I'd only run IK22 with an actual J32 in there.
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Old August 30th, 2005, 08:51 PM   #19
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Quote:
Originally Posted by BlackV62K2
Hmm, I'm going to be running IK20s with my SC + CLS HBP. IK22 maybe too cold?
that's what i dont understand, if IK22 are colder plugs why did they got burn?
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Old August 30th, 2005, 08:54 PM   #20
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Here's another video:http://videos.streetfire.net/Player....F-EFCFB1BE9801

you can see my engine almost jumped out, that's because i broke the right side mount but not sure if i broke the front mount too . at the end of the run you can hear the ticking sound...

Last edited by SIRSIG; August 30th, 2005 at 08:58 PM..
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Old August 30th, 2005, 09:22 PM   #21
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Can definitely hear the ticking.....was that there before the dyno runs? If so, then you just need to re-adjust ur valves.

Doom who has a J32? I don't think Sirsig has a J32 swap.
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Old August 30th, 2005, 09:27 PM   #22
 
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you definately have a valve problem. they may need adjustment or you might have bent valves with improper tuning and high rev line holding.
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Old August 30th, 2005, 09:56 PM   #23
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That's what I mean. I know J32's use IK22's but we shouldn't IMO unless it's way more aggressive than a s/c with a HBP.
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Old August 31st, 2005, 09:09 AM   #24
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I have J32 and use IK22. For the rest IK20 is fine.

Check valves (ticking) and compression test should be run on all cylinders to avoid any future issues. Do you have CL-S cams? Personally, I wouldn't upgrade to CL-S HBP unless intercooled. Finally, to be safe the car should be tuned as lean as 12.0 when in boost and best to be between 11.5-11.8 AFR at WOT. Check with gme2001 on Unichip authorized shop who I believe local to you.
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New setup: Forged 408ci (6.7L) All-motor coming - 53Xwhp/50Xwtq
Old time [email protected] . Best trap - 123.4mph


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'02 J32A2 AV6 - [email protected] (sold)
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Old August 31st, 2005, 09:13 AM   #25
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Also the belt is GOODYEAR Gatorback (Poly-V) part # is 4040245 (24.5 inch long) otherwise also know as 4PK0620.
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Old October 4th, 2005, 07:40 PM   #26
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I ran on a dyno dynamics today.

Here are the results: http://www.v6performance.net/forums/...ad.php?t=61873
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Old October 4th, 2005, 08:38 PM   #27
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thanks everyone for helping me. i'm putting back my car to stock form. . . thanks again.
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Old October 4th, 2005, 09:01 PM   #28
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^ Howcome?!!!
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Old October 4th, 2005, 11:32 PM   #29
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thanks everyone for helping me. i'm putting back my car to stock form. . . thanks again.


was thinking about doin the same , funny u mentioned that
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Old October 5th, 2005, 12:13 AM   #30
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^ Howcome?!!!
'Had enough!
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