Guesses on gains from fuel system upgrade?

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Mar 24, 2011 | 11:15 PM

91RS99z

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Staging Lane

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From: coldspring, tx

Guesses on gains from fuel system upgrade?

Had my car dyno tuned a while back made 313/331 with just catback and lid but around 3500 it started losing fuel pressure and flattening out and I found out it had a leaking injector.
Since then I've replaced the fuel pump and put some fuel injectors that the tuner suggested would make a small difference in power as well as deleted the emissions.
So my question is how much more power should a catback and lid car make with proper fuel pressure and do you think the injectors will change much?

Car is a m6 and it dropped to almost 20psi before the pull was over

Mar 25, 2011 | 05:40 AM

lilmiller74

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From: Grove City, Oh

My car with lt's, lid,ls6 intake and flowmaster cat back made 355/372

Mar 25, 2011 | 07:45 AM

ScreaminRedZ

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330 rwhp isn't out of the question for a strong running car with a lid and catback. What year is it?

Mar 25, 2011 | 08:25 AM

91RS99z

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Staging Lane

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From: coldspring, tx

Its a 99 I was thinking it might be around 330 when it's all said and done too with the way it flattened out up top

Mar 25, 2011 | 08:39 AM

lilmiller74

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330-350 is common power for bolt on m6 cars so you should for sure be in that power range.

Mar 25, 2011 | 09:07 AM

ScreaminRedZ

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Quote:

Originally Posted by lilmiller74

330-350 is common power for bolt on m6 cars so you should for sure be in that power range.

This car is just a lid/catback car so I doubt it will hit 350.

Also, out of curiosity, what kind of dyno were you on? 372 torque is the highest I've ever seen from those mods.