Ok, I made a question a few weeks ago about "has anyone done this themselves"... because I was talking about the throtle body.
The guy who I guess is the owner of Masbore, said he could do it for 100 dollars, and 60 dollars for the intake manifold.
My question is: I have i/h/e ,so... how much power could I gain from the bored and polished throtle body and the intake manifold (...that guy mentioned that that part could only be bored at the bigger part...)...???
I have a 97 accord Ex Vtec SOHC....
Thanks!!!

 

won't be incredibly noticable

 

well... I've thought about it.. ....but... technically, how much horse power could that increase? ...that wouldn't affect gas mileage right?

 

I'm curious also. "incredibly noticeable"? I know my ride by heart, and can feel 2whp. Are we looking at a possible 5-8 whp? If I can get that for less than $200, I'd be satisfied.

 

Bored from 56mm to ?mm

I had it done. I don't think your looking at 5-8whp, maybe 2-3whp, maybe not

You could also buy a skunk2 throttle body 70mm (+ have it port-matched to the IM)

 

I doubt if you would feel it. the butt dyno sucks anyway.

You could also buy an H23 throttlebody and have that portmatched.

 

I can understand why you don't call it a dyno-butt, cuz it would sound too jurasic .

IMHO, Gains seen from enlarged throttle bodies are mostly realized when the TB becomes a restriction point due to improvements elseware; as an example:

You jump through hoops doing head work, install 4/2/1 headers (enlarge the collector) and a 2 1/4" system. It's really capable of breathing now, but the TB is now the limiting factor.

Think of it this way: you wouldn't think of leaving that 450cfm Rochester carb on a built up small block, and in the same vein you wouldn't put a 850cfm Holley carb on a stock small block either.
In the first case, the carb (tb) remains the 'choke point" and
In the second, the carbs' advantages are negated because the rest of the package can't take advantage of it.

P

 

doing it with the stock ECU system, injectors, ect... you will probably not be overjoyed with the results.. but get it done, get a chip, new fuel rail, injectors and fuel pump. and i think you will be quite happy.!

 

Stock injectors can match plenty of airflow. If the're clean and in good condition. FI would be about the only reason you'd get rid of your OEM injectors