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Old 10-10-2013, 09:55 AM
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GTP38R Questions

Long story short a buddy has to sell his rig and is letting me take parts off it before he does.

He is letting me swap his 38R for my stocker with the ATS ported housing and Billet wheel.

I talked to Jay with PHP and he said that since the 38R is a drop in replacement i wont gain much having my chip reburned except they can add more fuel in the top end.

Question, if you were to put a 38R in with the mods i have and do nothing else at the moment would you have your tunes updated? Its only $25 per tune so not too bad. Anyone do this and drive the truck after turbo install but before they got reburned chip? Any noticible difference? Is it worth sending it in? Jay kinda made it sound like its not really worth it. Most vendors would just want your money and say it would need to be done. I respect Jay a lot for being honest.

Im also curious if anyone has done what im about to do and how much of a performance gain did they notice? Am i going to notice a big power improvement or do i need to get new injectors to really get anything out of it?

I would like to get injectors in the future and really was not planning to upgrade the turbo but i could not pass this deal up.

Thanks for the input!
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Old 10-10-2013, 12:56 PM
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I would not change anything.
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Old 10-10-2013, 01:09 PM
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Originally Posted by CSIPSD View Post
I would not change anything.
Wouldnt change anything including the turbo?

or just drop it in and be done with it?
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Old 10-10-2013, 01:21 PM
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Just throw it in, tighten the wastegate and move on...

Not worth any programing changes.
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Old 10-10-2013, 01:44 PM
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Quote:
Originally Posted by CarportMechanic View Post
Wouldnt change anything including the turbo?

or just drop it in and be done with it?
The peak hp will probably not change. The advantage is the 38r will spool faster than your current turbo thus making it more fun to drive. In other words the average hp should actually go up because you will be making more hp earlier in the powerband. This is why most people recommend skipping the ported housings, aftermarket wastegates and everything else you can do to the stocker. Money much better spent on an aftermarket turbo. My 2 cents.

JC
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Old 10-10-2013, 02:17 PM
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Quote:
Originally Posted by CSIPSD View Post
Just throw it in, tighten the wastegate and move on...

Not worth any programing changes.
Cool, will do. Thanks!
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