Allright now, I did a search on this and came up with nada.

For those of you (maybe all of you) who are wondering what the hell this is, I'll explain.

I own a 95 Z28 (my baby) and for these cars there is a free mod referred to as a throttle body bypass. All it consists of is removing the coolant lines from the throttle body and connecting them together thereby bypassing the coolant flow. Very simple to do but there are multiple dyno sheets, hardcore evidence that there is a substantial increase in horsepower when it is performed. 4~8 horsepower on a 300-350 horse engine.

The thought behind it is that when the coolant temp rises it heats up the intake air running through the throttle body. Possibly good for emissions, helping vaporize the fuel faster but not good for making horsepower.

Anyway, just wondering if anyone has ever tried this before. I'm putting my truck back together right now from a head gasket change. Installing headers full exhaust, doing some airbox work, and installing an electric fan so I won't be able to tell if it makes a diff. or not but, I'll try it anyway.

Any comments are appreciated.

Thanks,
Ryan

 

I was just talking with FattyCBR on this one the other day. It sounds like a good idea to me. The only thing that should be a concern is the winter months, but I'm not sure it will really matter for me in TN. Woulnd't want the throttle body to freeze up at all, which is why FattyCBR explained it's there. I'm going to try it and see what happens.

Chris

 

I like the idea, but I'd be concerned about additional deposits in my engine. I'm already running a cooler thermostat. I'm anxious to hear a report

 

I'd say this isn't going to effect depositing of unburnt fuel, because after the S/C'd air is heated, compressed, and sent into the cylinders, it's still probably more than hot enough to vapaorize all the fuel. The other reason is that before the S/C was installed on any of our trucks, the depositing had to be worse, because the intake air (CHT) temps were less than with the S/C, so I really don't think it will effect that, in my opinion, but I could easily be wrong.

I'm going to try it!

Chris

 

Like Chris said we were talking about it a couple of days ago. I had mine bypassed last summer and definitely noticed a difference in the temp of the TB. I never dyno'd it though and if I get some free time in the next few weeks I'm going to redo it.

 

It seems to me that the coolant should be able to be cooled to a much cooler temperature somehow. If it could, wouldn't it provide a lot more HP by running that much cooler as a whole?

Also, has anyone thought of adding A/C directly into the intake during the summer months to further reduce the intake temperatures and add more HP? Sounds like a good idea to me, and it also sounds like Ford is doing something similar in their new S/C truck, and it adds a lot more power. Any ideas?

Chris