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Oct 18, 2008 | 11:26 PM

irocktheIROC

Thread Starter

1st Gear Member

Joined: Mar 2008

Posts: 200

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question...

if my 89 rs has tbi, would i make more hp hoppin up the tbi or switchin out for a carb? also, does tbi help economy or not really? im sure i can tune it out really good but idk, what you guys think?

Oct 19, 2008 | 02:14 AM

MadMikeZ28

Overdrive Member

Joined: Jul 2006

Posts: 4,248

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RE: question...

I think you would be better off with tweaking the TBI. More reliable and less maintence. The TBI's heads are its weak point.

Oct 19, 2008 | 11:09 AM

blackz87

4th Gear Member

Joined: Mar 2006

Posts: 2,430

From: Florida

RE: question...

I would leave the TBI alone.If you want more out of that 305, I would add 1 5/8 dia Headers, HI-Flow Cat (3"in/out) and 3" Catback Exhaust. That would give you additional horsepower and a base for other mods.

Oct 19, 2008 | 08:58 PM

irocktheIROC

Thread Starter

1st Gear Member

Joined: Mar 2008

Posts: 200

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RE: question...

my car has headers, 3in exhaust, edelbrock tbi performer intake, and cold air...

Oct 19, 2008 | 09:38 PM

MadMikeZ28

Overdrive Member

Joined: Jul 2006

Posts: 4,248

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RE: question...

Going back to your choice of TBI or carb I still say stick with the TBI. Since you already have all the other mods find some one that does custom proms for what you have.