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TPI ecu worries me

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Old 01-06-2011, 09:51 PM
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Car: 86 Iroc-Z28 Camaro/84 BMW M Power
Engine: 350TPI/ S50
Transmission: t-5 five speed/ 5 speed
Axle/Gears: 3.42 posi/ 3.73LSD
TPI ecu worries me

I have some ecu worries pertaining to what i want to build my motor too.
I plan to use my stock 86 TPI intake on a 350
I have a standard bore 350 block, out of a late model truck( Roller Motor)
I plan to have a 10.5:1 Compression ratio with aluminium heads.
Also plan to use a comp cams computer friendly cams. not sure which one because of my computer woes.

My problem is when my motor is all complete, how will i have to deal with my stock computer to handle the increased displacement and increase in compression ratio. i plan to go to a stand alone ECU later on done the road, but right now i need the motor to run with out it detenating and what not.

Any advice or input of the subject would be apreciated.
Old 01-07-2011, 12:02 AM
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Car: 1986 Irocz
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3.25:1
Re: TPI ecu worries me

You need to have this discussion with the person who will be doing the tuning of your PROM.
Old 01-08-2011, 12:59 AM
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Car: 88' IROCZ
Engine: 388 TPI Motown 350 Race block
Transmission: 700R4
Axle/Gears: 2.77
Re: TPI ecu worries me

Originally Posted by Iroc-Z28Man
I have some ecu worries pertaining to what i want to build my motor too.
I plan to use my stock 86 TPI intake on a 350
I have a standard bore 350 block, out of a late model truck( Roller Motor)
I plan to have a 10.5:1 Compression ratio with aluminium heads.
Also plan to use a comp cams computer friendly cams. not sure which one because of my computer woes.

My problem is when my motor is all complete, how will i have to deal with my stock computer to handle the increased displacement and increase in compression ratio. i plan to go to a stand alone ECU later on done the road, but right now i need the motor to run with out it detenating and what not.

Any advice or input of the subject would be apreciated.
The 305 and 350 TPI intakes are the same which is what came with my '88 5.7Liter it's ECM is a 1227165 ECM from which I deleted the Cold Start injector and upgraded to an '89 binary file.
You haven't done anything that the ECM can't handle, unless you're going to use MAP instead of MAF then you'll need custom tuning.
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