Update - Race Prep 383, Vette Doctors DFI tuning

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May 2, 2004 | 08:11 AM

#16

jimbjr

Thread Starter

Registered User

Joined: Apr 1999

Posts: 48

From: oakdale, NY, USA

I'm going to have to look for my receipt for the DFI.

I purchased it with the LT1 harness and the nitrous harness.

The install wasn't cheap either.

Jim

May 2, 2004 | 08:32 AM

#17

ChevyIron

Registered User

Joined: Aug 2003

Posts: 164

From: Long Island,NY

Thanx Jim I know its not a cheap mod but at my stage I just want the car running right.One more thing who installed the dfi for you?

May 2, 2004 | 10:51 AM

#18

Highlander

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Joined: Mar 2002

Posts: 3,082

From: San Juan PR

Quote:

Originally posted by jimbjr
This winter I might pull the heads and flow them. Just so the curiousity stops.

If the heads are flowing the numbers, couldn't the LT4 manifold be the restriction?

Jim

YES!!!! THE LT4 Manifold is VERY VERY SMALL UNPORTED!!!!! I saw mine and I was totally dissapointed... I suggest before removing the heads, send the manifold to phil @ ai.

May 2, 2004 | 11:47 AM

#19

jimbjr

Thread Starter

Registered User

Joined: Apr 1999

Posts: 48

From: oakdale, NY, USA

ChevyIron,
The Vette Doctors did the install and tuning. They're installing one on a low 9, high 8 second vette right now. Does the 97 Camaro have OBD II, you should give them a shot tuning it before the dfi.

Highlander,
What exactly is done to the manifold? Can the same thing be done to an LT1 manifold (I have an extra)..

Thanks
Jim

May 2, 2004 | 11:48 AM

#20

Highlander

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Joined: Mar 2002

Posts: 3,082

From: San Juan PR

If you have lt4 heads the lt1 wont fit correctly w/o spacers and such...

goto

advancedinduction.com

There are pics there of the porting.

May 5, 2004 | 08:00 AM

#21

IllusionalTA

Registered User

Joined: Jun 2000

Posts: 1,542

From: Long Island, NY ; Norfolk, VA

Gen VII is typically 1500 w/o WB02 for the LTx harness included.. W/ wb02 its 2300-2500 depending on where you get it.. The actual install is quite straight forward the stock pcm harness unplug's just inside the passenger side fenderwell.. Its a lil bit in depth but if you have time you can do it yourself. You can keep your speedo if you keep the stock pcm and just splice it somehow.. www.fasttrackperformance.com i believe they are pretty good w/ these system's..