will i need a re-tune?

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Dec 28, 2005 | 08:51 PM

1BADBURB

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Launching!

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From: The Midwest

will i need a re-tune?

i have a 427 C5R motor in my vette..i want to put in nitrous on it, a 150 or 200 shot... would i need a re-tune? Do u need any sort of retune when installing nitrous.

Also, would i need a booster pump? the current injectors are the red ones, 34# i think...

thoughts, suggestions...all appreciated...
Aj

Dec 28, 2005 | 10:18 PM

white2001s10

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From: Fairview Heights Illinois

Quote:

Originally Posted by 1BADBURB

i have a 427 C5R motor in my vette..i want to put in nitrous on it, a 150 or 200 shot... would i need a re-tune? Do u need any sort of retune when installing nitrous.
Also, would i need a booster pump? the current injectors are the red ones, 34# i think...
thoughts, suggestions...all appreciated...
Aj

Yes and yes.
Moving that kind of fuel volume I'd go with a dedicated fuel system for the nitrous.
Is this going to be dry, wet, or direct port?

If you're running on the edge with your spark advance then you'll definately need to adjust it when running that much bottle.
The only way I know to avoid changing the tune would be to run 114 or greater octane in the dedicated fuel system. Then you could leave the tune alone.
A second dedicated fuel system is far better than a booster pump.

Dec 28, 2005 | 10:44 PM

1BADBURB

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Launching!

Joined: Dec 2005

Posts: 213

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From: The Midwest

ohh yes, i would be running a wet kit. i would think that with my motor being soo big, perhaps the builders already had a upgraded pump installed...
im in the process of gettin in contact with the builders, see what they say..
thanks!
Aj