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305 e-prom???

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Old Sep 26, 2006 | 02:15 PM
  #1  
jack harrison's Avatar
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Joined: Nov 2005
Posts: 148
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From: Bromley south east london, England
Car: 1987 pontiac trans-am
Engine: 350 tpi
Transmission: 700R4
Axle/Gears: 3;73 with eaton lsd
305 e-prom???

hi guys, i havent been on for a while but i have a question. i recently sold the 305 engine out of my 87 t/a and had a 350 put in. it has edlebrock performer heads, cranes cam camshaft, roller rockers, hedman headers and a de-catted borle. with 100 shot of gas i ran a new p.b of 12.9 @ 108 mph!! the only thing is is that it is still running on the 305 e-prom and ecu. is this going to be a problam, or is it best to get a custom chip burned? i have one on the way but i just want to know if it will make a differance. oh and its a maf by the way.
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Old Sep 26, 2006 | 03:37 PM
  #2  
3.8TransAM's Avatar
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Joined: Feb 2000
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From: Schererville , IN
Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
Get a chip matched to your setup.

I start with the closest factory applicable bin to the application.

Aftermarket chips will take u awhile to get right.

Leanring to do it yourself and costs involved are about half of what a quality ship goes for,

The DIY PROM board here is a very wonderfully organized way to get started.

later
Jeremy
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