hotrod sfi

[quietone]

I am building a small aluminum V8 to go in a Fiero. I want sfi, dis, 4T65E trans., probably 2-3 bar turbo setup. What is the best GM ECM to use?

[VL400]

The 4T65E will limit you on choices, the '165 found in the US that can run 12P (http://pcmhacking.net/forums/viewtopic.php?f=27&t=356) wont work with an electronic gbox. Will need to see the US users can offer.

[quietone]

What about one of the ecms for an LS engine? Some of the Camaro setups should be pretty well hacked by now.

[Holden202T]

when you say SFI is that refering to sequential injection ?

[quietone]

Yes, I am actually using the basic manifold and intake system from a 3.9 Rangerover, and I decided that with all the trouble, might as well go all the way. I am thinking about on of the LS units that support cable throttle.

[CHEQUERED TUNING]

Ls1 ecu and this signal kit from EFI Connections.
http://www.eficonnection.com/eficonnection/24xSBC.aspx

Im using this kit on my 1960 belair with TPI manifolds... i wanted something that could run a 4L80e and late model knock control, large turbo going on soon.

[DixiePicker]

I am building a small aluminum V8 to go in a Fiero. I want sfi, dis, 4T65E trans., probably 2-3 bar turbo setup. What is the best GM ECM to use?

The 4T65-E has the same shift pattern as a 4L60/65/70-E. This means the shift solenoids in first, second, third and fourth gear are the same as the L60.

If you decide to use a US PCM such as a 2003 nat asp and turbo this, the engine has a high prob of a stall when you lift foot. Reason, the air bouncing off the closed TB blade goes back past the MAF. The S/W fuels for this air and it's rich stalling. Patched s/w is nec.

If you obtain a 4T65-E and it was a E C Cubed or ECCC where the TCC slips at a controlled rate, I would disable this and calibrate it for an on/off. You'll spend to much time chasing the slip. Use a big cooler on the trans. No rubber hos on the lines.