TPI runners interchange years

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Oct 17, 2013 | 05:35 PM

ghoastrider1

Thread Starter

Le Mans Master

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From: indy indiana

TPI runners interchange years

do 91/92 runners of a trans am TPI interchange? thanks.

Oct 17, 2013 | 06:13 PM

vetteoz

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Quote:

Originally Posted by ghoastrider1

do 91/92 runners of a trans am TPI interchange?.

With what ????????

Oct 17, 2013 | 06:32 PM

MrWillys

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From: Reno Nevada

All TPI runners will interchange. However, 89 thru 92 will not have provisions for the cold start injector if used on 85 thru 88 systems.

Oct 17, 2013 | 06:37 PM

ghoastrider1

Thread Starter

Le Mans Master

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From: indy indiana

Quote:

Originally Posted by MrWillys

All TPI runners will interchange. However, 89 thru 92 will not have provisions for the cold start injector if used on 85 thru 88 systems.

thank you sir.

Oct 17, 2013 | 07:39 PM

UNCLEBILL

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From: Coquitlam British Columbia

Quote:

Originally Posted by ghoastrider1

thank you sir.

Accel used to have a 9th injector delete kit. A plug for the injector and a cap for the fuel rail. Did this to my 1988 Formula 350 Firebird (sons car now). Never found it a problem deleting the 9th injector.
Bill

Oct 18, 2013 | 03:40 PM

Baller

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Also check the EGR. I replaced my 90 tubes with Accells street runners for an 88-89 and they had EGR connections on both sides so I had to plug the drivers side to stop a huge vacuum leak. 990 Runners don't have a drivers side EGR tube.

1988

1990

Oct 18, 2013 | 06:12 PM

vetteoz

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Quote:

Originally Posted by Baller

they had EGR connections on both sides so I had to plug the drivers side to stop a huge vacuum leak.

Nope.

The drivers side tube is the IAC feed direct into the TPI base for the cold start injector used on the early cars as mentioned above

'89+ runners; no CSI so no drv side tube

Oct 18, 2013 | 06:37 PM

Baller

Instructor

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Quote:

Originally Posted by vetteoz

Nope.

The drivers side tube is the IAC feed direct into the TPI base for the cold start injector used on the early cars as mentioned above

'89+ runners; no CSI so no drv side tube

In either case if you don't have the matching plenum from the same year you can get one huge vacuum leak. So OP, check to make sure the plenum matches the runners because there is a difference between years. In my case it was easy enough to just plug the tube and seal it.