70mm throttle body and throttle

[soundguy]

has anyone come up with a solution yet for the difference in air flow with a 70mm throttle body since it flows more for a given tps value. Wide open throttle is no prob, but anywhere between that and idle it seems like computer confused and hesitates.

 

[441120]

70 mm

Do you have a popping at about 1/2 throttle when you stab the throttle fast?
If you slowly ease into it, it doesn't seem to happen?

 

[Race Jace]

most guys that make chips can compensate for that.

 

[soundguy]

no popping, its just more like the computer gets confused and hesitates.
I got a chip from eric which I thought I mentioned about the 70mm.

 

[VadersV6]

Like Jason said, I think the only way to properly take care of that is with a chip. The computer is looking for, if air mass=A, throttle position should = B and O2 should = C. Then D (pulse injector width or whatever) should equal X. A and C dont = B and dont come close to matching and the computer doesnt know what to do. Not the most technical answer but you get my drift. Its like running a #28 accelerator pump nozzle (for a 600CFM holley) on a 750CFM Holley which should have a #31 pump nozzle. A bigger and faster pressure drop requires a bigger and faster pump shot of fuel.