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#357537 Dec 23, 5:07pm
Joined: Feb 2004
Posts: 11
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2003 Toyota Celica GT
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2003 Toyota Celica GT
Joined: Feb 2004
Posts: 11
I need help with how much boost my car can handle with the internals stock also with 310cc or 510

Joined: Jan 2004
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2002 Toyota Celica
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2002 Toyota Celica
Joined: Jan 2004
Posts: 1,227
Likes: 1
for a GT with stock internals anything more than 6psi is pushing it. Hopefully you're upgrading your fuel pump as well as injectors. I'd say keep it around 6psi and not over unless you do some internal work. The 310 or 510 injectors will help make your engine perform better with the turbo, but unless you do some internal work it's not going to get you any more boost safetly.

Joined: Sep 2003
Posts: 2,241
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2000 Toyota Celica
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2000 Toyota Celica
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6 psi is super safe. I personally would do 8-9 psi.


Best 60' 1.959 best 1/4 - 13.7 @ 101mph

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^ Don't you think 8-9 would be kind of risky without upgraded fuel system, Mike?

Joined: Sep 2003
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2000 Toyota Celica
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2000 Toyota Celica
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nope. if he goes with the bigger injectors he'll definitely not have to worry.


Best 60' 1.959 best 1/4 - 13.7 @ 101mph

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< chicken.

Joined: Oct 2004
Posts: 57
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2000 Toyota Celica GT Turbo
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2000 Toyota Celica GT Turbo
Joined: Oct 2004
Posts: 57
I am doing 10psi with stock internals,and running for 1,5 year now.
Finn.

Joined: Sep 2003
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2000 Toyota Celica
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2000 Toyota Celica
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^^^ thumbsup thumbsup


Best 60' 1.959 best 1/4 - 13.7 @ 101mph
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