Ok i looked through old posts... didnt see if anyone actually proves that they make a difference.. Can I get opinions only of people that have it done? Thanks.

 

Since the stock TBI unit flows around 400cfm, any improvement will be felt. Stock unit has too much shrouding around those injectors to get good flow. The only thing I didn't do on mine was grind the throttle shaft. I just didn't feel comfortable grinding there.

 

worth a tenth or a tenth and a half, right nj?

 

its hard to say for me, because I just had a chip, ultimate mods and increase fuel pressure done at once. PM to 91bird305 because he had his done and he said it made a difference for him.

 

that is what i got from mine and i think blackbird305 picked up teh same.

later
tim

 

i picked up well over a tenth after completion of the ULTIMATE TBI MOD

 

I was looking at the TBI unit today and it seems like there is a lot of extra material on it. I almost started grinding off all unncessary parts of it. I guess that's some weight reduction we can add to the post about that. hahha

 

I don't know what kind of difference it makes. I am glad someone is asking I was wondering myself. I have made too many mods at once to know. The last time my car seen the track was in 1990 when it was bone stock. It ran a 10.66 1/8th @67mph. Wonder what it will run now??????