tpiswap sd 2maf
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Welcome to thirdgen.org. !!
You'll need a MAF sensor and run the '89 PROM with VAT's deleted. You'll have to plug the hole for the MAP on the Plenum.
This would be the easiest for you as I can see.
Good luck.
You'll need a MAF sensor and run the '89 PROM with VAT's deleted. You'll have to plug the hole for the MAP on the Plenum.
This would be the easiest for you as I can see.
Good luck.
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
You still need a MAF sensor.
You could run without the MAF, but drivability will suffer.
You cannot wire the MAF harness to the MAP sensor, it won't work.
I assume you have the '87 EPROM in the ECM as well? If so, you may try running it with that EPROM, but cold start may be difficult since startup parameters are set with a cold start injector, which you don't have with the SD intake...nor a place to install a CSI.
A Wells replacement MAF is about $200, and many use it, you can get a rebuilt OEM style for about $125-150 + core charge.
If cost is the issue, you can look into getting some connectors and repinning your harness for an SD ECM...but you'll still have to get another ECM (about $50 or so used) and a SD EPROM with VAT's deleted.
You could run without the MAF, but drivability will suffer.
You cannot wire the MAF harness to the MAP sensor, it won't work.
I assume you have the '87 EPROM in the ECM as well? If so, you may try running it with that EPROM, but cold start may be difficult since startup parameters are set with a cold start injector, which you don't have with the SD intake...nor a place to install a CSI.
A Wells replacement MAF is about $200, and many use it, you can get a rebuilt OEM style for about $125-150 + core charge.
If cost is the issue, you can look into getting some connectors and repinning your harness for an SD ECM...but you'll still have to get another ECM (about $50 or so used) and a SD EPROM with VAT's deleted.
Thread Starter
Junior Member
Joined: Mar 2005
Posts: 41
Likes: 0
From: greenfield, CA.
Car: 1984 camaro
Engine: 426 stroker sbc
Transmission: 700r4
yes i have the eprom from an 87 also have the maf so i can use the 87 ecm with an 89 prom cold starts are not a real problem i live in ca
Supreme Member
Joined: Jul 1999
Posts: 5,183
Likes: 42
From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
Yes, the '87 ECM is the same as the '89, only the EPROMs were different.
You will have to have VAT's disabled from the '89 PROM.
I'd probably start with the '87 and see how it goes...depending on what type of conversion you're going nito, you may want other things disabled...so get it going with the '87, then have another PROM burned, or head over to the DIY_PROM forum and figure out what you need to make your own.
What part of Ca. are you in?
You will have to have VAT's disabled from the '89 PROM.
I'd probably start with the '87 and see how it goes...depending on what type of conversion you're going nito, you may want other things disabled...so get it going with the '87, then have another PROM burned, or head over to the DIY_PROM forum and figure out what you need to make your own.
What part of Ca. are you in?
Thread Starter
Junior Member
Joined: Mar 2005
Posts: 41
Likes: 0
From: greenfield, CA.
Car: 1984 camaro
Engine: 426 stroker sbc
Transmission: 700r4
im in salinas swap is 426 tpi sb in to a 84 camaro and pass smog want to drive around town legally on occasion to my next question prom burning any one in my area want to make some cash
