Ok, tonight is the first time that i was able to drive my car since i swapped form TBI to TPI, and let me just say that it was the smartest thing i have ever done. I am not too wise with TPI yet though, so thats why I have come here for help. I hope you guys understand what i mean by "the small tube on the runners". My question is, I bought a set of SLP runners and the passenger side on is blocked of with a plug. Why is this? The runners that came off of the car were not blocked off. The TPI is off of an 88 IROC. Should I try to take out the plug? And finally, What does this tube do? Thanks alot guys

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*1989 RS
*Red, Daytona Turbo fiberglass hood, chrome 16x8 IROC wheels
*355 CID
*TPI ported plenum, SLp siamesed runners, Edelbrock high flow intake
*Edelbrock TES Headers (getting SLP 1 3/4 this summer)
*Richmond 3.73
Modded 700-R4, 2800 stall converter
NO recent time slips.

 

The small tube on the passenger side is for the EGR. It shouldnt be normally be blocked. The little tube on the driver side on 85-88 is for the 9th injector.

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1989 IROC-Z 5.7L
NOS 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System