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Car won't boost past 23.8 psi

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Old Apr 28, 2011 | 01:13 PM
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Car won't boost past 23.8 psi, Dyno Results HTA Green

Just trying to get some more ideas as to why my car can't boost. I just had my new HTA Green installed along with injectors and a Grimmspeed EBCS and made a 317whp on a dyno dynamics with 1.0 correction. I was a bit dissappointed but the tuner couldn't get the car past 23.8 because it is pulling timing. I know dyno dynamics read lower than some mustang dynos but still....I thought maybe I had a bad tank of 93 but this same issue happened when I orginally had the car tuned for cams/bolt-ons. Tuner may have thought it has something to do with the knock sensor? Had the car checked for boost leaks, compression test, leak down test. Everything seemed fine.... I'm stumped. I have a 25psi WGA and I can't even get to 24psi. I know a lot of guys run 25-27psi on 93 without any problems. Any advice would greatly be appreciated....

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Attached Thumbnails Car won't boost past 23.8 psi-img001.jpg   Car won't boost past 23.8 psi-img002.jpg  

Last edited by tdubbz; May 2, 2011 at 09:47 AM.
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Old Apr 28, 2011 | 01:17 PM
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send me a pm.. sounds like the car has excessive engine noise and both tuners were not experienced enough to know how to fix it. i deal with cars like this all the time.

as for 25 wga only doing 24psi.. its common depending on rod tension.
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Old Apr 28, 2011 | 01:19 PM
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who tuned your car and who did the install, you may want to try another shop and tuner or do remote tuning? so if i am reading this correctly you had the same issue with boosting past 23.8 when you just had cams and bolt ons?
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Old Apr 28, 2011 | 01:20 PM
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there you go tcomp is offering to help he should sort you out, good luck with your car. also i know a shop in nh with a very experiences evo mechanic (not a tuner though) if you want i can send you his contact info-
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Old Apr 28, 2011 | 02:09 PM
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[quote=zeus1;9278254]who tuned your car and who did the install, you may want to try another shop and tuner or do remote tuning? so if i am reading this correctly you had the same issue with boosting past 23.8 when you just had cams and bolt ons?[/q

It may not be the shop's fault so out of respect for them I'll leave names out of it. The first shop who tuned the car with the cams/bolt-ons could not tune past 21-22psi, they orginally thought bad 93.
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Old Apr 28, 2011 | 02:11 PM
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Originally Posted by zeus1
there you go tcomp is offering to help he should sort you out, good luck with your car. also i know a shop in nh with a very experiences evo mechanic (not a tuner though) if you want i can send you his contact info-
Ballistic Motorsports? If not shoot me the info. Thanks
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Old Apr 28, 2011 | 02:47 PM
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It blow the EGR line off? Cam timing has been doublechecked and you know its not advanced a tooth or 2?

aaron
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Old Apr 28, 2011 | 02:57 PM
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never mind saw it was not due to the turbo but the timing

Last edited by RoadSpike; Apr 28, 2011 at 03:03 PM.
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Old Apr 28, 2011 | 05:59 PM
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hmm.. I don't know if the cam timing was checked. I will have to ask

Originally Posted by JohnBradley
It blow the EGR line off? Cam timing has been doublechecked and you know its not advanced a tooth or 2?

aaron
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Old Apr 29, 2011 | 07:39 PM
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Anyone check the wastegate arm if it's stuck?
I wish I can see your map.
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Old Apr 30, 2011 | 07:27 AM
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Shoot Tscompusa a email he will help I am one of the cars that had excessive noise and he fixed it. I would def check the Timing and see if the gears might be off as it could cause a issue.
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Old May 1, 2011 | 10:53 PM
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bump for charts
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Old May 2, 2011 | 07:48 PM
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Originally Posted by tdubbz
bump for charts
maybe i am reading the second chart incorrectly but is the afr going in to the mid 10's? that is pretty rich. there is also a spike there there that looks abnormal. i think once you get another tuner that knows what is going you will be good to go
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