Im doing a conversion on 92 truck,and im using an 85-86 tpi,not sure which year but i had to relieve the two center holes to put the intake on.Im using the Street&Performance integrater box and harness.And i was provided with the 730 ecm so it would be speed density,which they say is 90-92.Can i use all the 85- 86 parts iac,tps,etc.Or do i need to use parts from 90-92.Also was curious about egr,they said use 85-86,put could provide no part number,and checking parts there are so many specific egr's for applications,which can i use?The VIN for scanning they provided is. 1G2FS2389NL200001 Thanks Mike Oh,and egr should be 1 hose,negative pressure,S&P said i dont need temp sensor.Is this true?

[This message has been edited by Mike635 (edited March 06, 2001).]

 

Im not too sure if you can use the other parts but the egr they are telling you to get judging by that vin number is from a camaro, the second digit (G) is for camaro and the eighth digit which is (8) is for 5.7 (350)TPI.hope that helps.How is that harness? I was looking into it.how are street and performance to deal with?

 

There harnesses are good,just plug and play.The integrater box was so my gauges, and all the other equipment truck only would work with the tpi ecm.You still use some plugs from original harness,so you have to figure out what to do with them,i didnt want to cut them,so i just kinda stashed them outta the way.The only extra thing i had to do was pin out the ecm so could run the computer controlled purge cannister.The vacuum controlled truck one wouldnt get me past the smog gods because of the upgrade.Which is my only beef with them,they have one guy for emission problems and i can never get ahold of him to try to sort out my egr problems.

 

Some of the passages are different on the plenum & runners between 85 and 91-92, the 85 runners and intake will have the passage for the cold start injector that will have to be plugged, and some of the EGR passages are different I believe, someone correct me if I'm wrong. I know there were at least 3 different plenums that GM used in the TPI setup, your plenum will also have to have a port for the MAP sensor since you plan on using SD. There are probably more differences than that, but it's late, and my brain is starting to kick into low gear....

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Kevin Irving
85 Trans Am WS-6, 305 TPI, custom burned '86 PROM with '87 "165"ECM, Accel Supercoil & 8.8 Wires, MSD 6AL, Aluminum Driveshaft, TB Coolant Bypass, Ported Plenum, Modified MAF, Syclone Fuel Pump, JET Airfoil

15.556 @ 86.65mph, Nov 10, 2000.... I know it sucks.. but it will get better!

http://www.geocities.com/transam85tpi/