What benefits are to be expected if I bypass my throttle body?? HP?? Quicker acceleration?? Cooler running engine?? Is it worth the effort and what all has to be done to by pass the throttle body on my '93??
:seeya

 

Plenty of pros and cons about that on here. If it feels good. Do it. Its a cheap thrill. :yesnod:

 

5+ HP increase; nothing you'll notice SOTP wise tho.
Cooler air induction; cooler air = denser fuel charge.

EASY as hell to do; get a brass joiner 1/2" to 3/4" I THINK by memory and join the hose from RHS of TB to hose under TB (Use hoseclamps too obviously)...Thats it.

Then open your airbox lid, put a K&N filter there...use a cooler thermostadt...Higher pressure radiator cap...etc etc...all cheap mods that add up in HP and even if you can't feel it; it's one of those nice to know improvements.

:thumbs:

 

makes it easy to replace throttle body gasket

 

If your LT1 is set up anything like mine ('95), you don't even have to buy a single part. The point of the coolant running through the throttle body, as I understand it so far, is to warm the throttle body in northern areas where it could get really cold and perhaps in some instances freeze it? Something to that nature, not sure exactly.

But anyway, all you have to do is take the hose coming from the passenger's side of the throttle body and disconnect it (be careful, tiny bit of coolant will come out, make sure car's cold), then track it to underneath the covers on top, the plastic pieces, remove that end as well. You won't need that any more so you can ditch it or save it for extra parts. Remove the end from the driver's side of the throttle body (both should be near the bottom of it), and route the hose so that that end now connects to where the latter end of the other hose was (the engine end, not the throttle body end) and connect it there. Tighten it up and bam you're done.

Imagine a hose running through the throttle body, all you're doing is making it run around that link instead of through it. Simple as pie.

Check the tech write ups if you still don't get it. :cheers:


[Modified by BowTieBlood, 11:43 PM 9/22/2003]

 

I think it's urban legend (especially the 5 free hp part) but it won't hurt anything.

You wanna go, put lower gears in the pumpkin.

 

:iagree: That is the reason. Can't have somebody sue GM because of frozen throttle blades stuck open while coming down the mountain from the ski resort.

 

If you do decide to do it, and want to clean up the engine area a little, then purchase the upper hose from a 95-96 model. It is one piece without the tee in the middle of it. Then purchase a stright nipple (5/8?) to replace the tee in the heater hose going to the other side. This will eliminate the hoses alltogether. Thats what I did.

 

:yesnod: BowTieBlood has it right.

:smash: I just disconnected the hose on the driver's side, and moved it to the metal line that runs along the head on the pass side eliminating the little hose that goes in between..

Now those wheel stands are much easier! :thumbs:


[Modified by Q1KSLVR, 6:40 AM 9/23/2003]

 

Check out this thread.

http://forums.corvetteforum.com/zerothread?id=530749


Graph of an fbody shows about a 3HP gain after the bypass.

 

Blake, it takes all of 5 minutes to do.........youi wont feel it but every little bit helps

 

As others have said, there is no seat of the pants gain for sure. The theory behind it makes sense. Having hot water run through your throttle body is certainly not a performance enhancing idea! Only takes a few minutes to do. Make sure you DO NOT just cap off the two ends. The coolant needs to flow. There is no need to cap off the tubes on the throttle body though, but if you want, you can use vacuum caps.

-Rick