ecm ?'s
Thread Starter
Joined: Jun 2004
Posts: 326
Likes: 13
From: jacksonville, fl
Car: 1988 firebird
Engine: 305 tpi
Transmission: 95 T56
Axle/Gears: stock 10 built, yukon diff, 4.10
ecm ?'s
im gonna be converting to tpi here soon. the ecm i have, is for a 305 tpi auto. my question is should i get an ecm thats for a 305 tpi manual since i have the t-5. does it matter which one i use? would i be fine just running the auto ecm?
Member
Joined: Sep 2004
Posts: 439
Likes: 0
Car: 1986 Camaro Z28
Engine: 305 TPI
Transmission: Who orders an auto in a Camaro??
Axle/Gears: Economy gears..once again, WHY?!?
Re: ecm ?'s
I am certain it does matter, can't recall all the reasons, but only in the PROM. You just need a manual trans prom for the ecm.
Joined: Jul 1999
Posts: 10,950
Likes: 26
From: Orange, SoCal
Car: 1990 Pontiac Trans Am
Engine: 355 TPI siamesed runners
Transmission: Tremec T56
Axle/Gears: 12-Bolt 3.73
Re: ecm ?'s
As PneumaticTire said, the ECM's are the same, its the prom inside that is different. With a stockish engine, it probably wont matter, but there are subtle differences that might make it tougher to run a manual with an automatic prom. The Idle Air motor is one. The car will probably want to stall when you push in the clutch while slowing down.
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Joined: Jan 2007
Posts: 1,088
Likes: 0
From: NYTHIRDGEN
Car: 1989 T/A
Engine: PROCHARGED LB9
Transmission: FB BUILT 700r4 2200 stall
Axle/Gears: 10 BOLT EATON 3:73 POSI
Re: ecm ?'s
what year is youre auto prom? if you are going to buy the manual one, maybe ill buy the auto one.
Thread Starter
Joined: Jun 2004
Posts: 326
Likes: 13
From: jacksonville, fl
Car: 1988 firebird
Engine: 305 tpi
Transmission: 95 T56
Axle/Gears: stock 10 built, yukon diff, 4.10
Re: ecm ?'s
thanks for info guys. 8T9 bandit my prom is from an 87. ill prolly just run with it as is for a lil while. and then switch to the manual prom once i really starting modifing the tpi.
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