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Nov 25, 2006 | 09:45 PM

kllrvet

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From: Cape Coral, FL

Boost ??

I have a 2005 GTO with an STS kit installed. It has a GT67 turbo with the STS intercooler and it also has a Devil's Own Meth kit as well. So far that car has shown just a hair over 500rwhp(with a poor tune). It made 7lbs on the dyno, and shows 9lbs on the street.

The car now has a 2 bar SD tune and runs seemingly safe on the street (A/F 11.5-10.9). What I want to do, is turn the boost up to about 11lbs. I just don't know if the motor will live okay. Anybody have any experience boosting an LS2?

Thanks in advance

Tony

Nov 26, 2006 | 07:31 AM

kllrvet

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To The top for the AM crew

Nov 27, 2006 | 08:07 AM

kllrvet

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Anyone have an opinion?

Nov 27, 2006 | 08:36 AM

SleeperZzZ28

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from what I understand LS2's are better at handling boost than the ls1 and there are several guys pushing over 11psi on a stock block ls1. I think youll be fine with a good tune and you should put down some good numbers.

Nov 28, 2006 | 10:03 PM

kllrvet

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Thanks for the reply. Any others have any experience/opinions? I am really wanting to try this, but fear wrecking my engine. I may let this pass for a while until I have $$$ to fix it if it turns out like this one:

https://ls1tech.com/forums/forced-induction/614784-cracked-block-broken-piston.html

Tony

Nov 29, 2006 | 07:37 PM

kllrvet

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bump!

Nov 29, 2006 | 07:43 PM

mahhddgtp

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You should be fine, especially with meth. Just fix that tune.

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Nov 29, 2006 | 08:02 PM

Frost

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I mean you are talking about adding fuel in the tune and turning it up, not just upping the boost and going with it right?

Nov 29, 2006 | 08:03 PM

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Frost

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....although if you are 2bar and it's mapped right you should be ok... how do you feel about your fuel under boost adder?

Nov 29, 2006 | 08:40 PM

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kllrvet

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The tune has been great. I was just looking for opinions. I didn't want to push my stock motor over the edge. I have a 12 gph meth nozzle in it now, and will upgrade to a 14 if I do up the boost, as well as rework the tune.

Thanks,

Tony

Nov 29, 2006 | 09:14 PM

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TopRPM

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I would get a dyno tune... and you should be safe....

Intercooler and Meth should take care of any detonation on 11psi..

Nov 30, 2006 | 07:19 AM

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kllrvet

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I have a wideband installed in the car, so I can street tune it, and get the best tune possible. I'll also save a few $$$ on the dyno rental.

Tony

Nov 30, 2006 | 07:51 AM

#14

StoleIt

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You still have stock fuel system? If so I wouldn't do it. Also, make sure you keep the meth full, you let it run out and boom there goes the motor if your in boost.

Nov 30, 2006 | 08:17 AM

#15

kllrvet

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I have Motoron 60lb injectors, and a 255lph intank pump. I have enough duty cycle left in the injectors to increase the boost, so fuel shouldn't be a problem.

I do keep the meth topped off all the time, but it really doesn't go through too much.

Tony