Hey you experts, what should I expect from installing a 80MM Throttle Body on my 5.3 truck? I'm already modded w/ cold air, engine-back custom exhaust, MAF, Nelson Tune & Shift Kit.

Is it worth it? Will I feel the diffrence?

 

i wouldnt buy one new. i got one on my truck and you cant really tell a difference with it on there. if you can get one for a good deal then id say do it. other than that dont

 

from wha i experienced on motors with just bolts they do **** , actually hurt you . my buddy has a 98 malibu , ran 15.1 . we did a lot of stuff to it . but he got a tb not sure what size and went back to the track couildnt break a 15.5 , hurt him so bad low end i guess . my other friend has a SI civic , runs 15.5 , after his skunk 2 intake manifold and tb he hits 15.7 , he put the stock tb back on to try it and hasnt been back yet . but i kno thats a import but my buddys malibu the 3.4 is set up like are 5.3 if u think bout it . idk thats just my thought i wouldnt bother with one till i have internals or power adder

 

I put mine on my truck when I had a lot of bolt on's and I think it actually hurt performance. So I took it off and put my spacer back on and it felt stronger again. but when i went with the Procharger I had them put it back on.

 

if you're not flowing enough air to make the stock throttle body be a restriction, you're wasting your time and money. at the power level you're at, you'll likely lose more than you'll gain.

 

Why does it cause a lose in power? Doesn't make sense. Of course I've been around flux remover fumes all day...

 

because so much more air is coming in the velocity is bein slowed down of the air flow and its causes a turbulence , most of them help in the upper rpms becuase theres so much more vac there pullin air in .

am i right guys

 

Just keep your stock TB. Unless your going to install a twin turbo kit or equivalent forced air induction.
The stock TB has plenty of CFM of flow to handle most power adders as well.

Jim

 

before i had nelson tune for the bbk 80mm t/b i lost 4/10 of a second at the track, but after we tuned for the t/b i gained 1/10 and 2mph over stock t/b. Same night testing.

On the dyno it showed 10hp gain. But like i said after nelson tuned for it.

 

I had mine in my 99 5.3 and I thought it helped. It was the only difference between mine and a buddy's truck and I would always have lower track times.

I got one I pulled off my 99 when I sold it that I will sell ya TorqueWrench.