Bigger/ported throttle bodies

[slammeds2k]

I have heard both ways that they help and they harm your motor, if you dont have certain mods before hand?

[Waffles]

I dont see how they could harm, but without supporting mods and a tune your not going to see any major gains.

[slammeds2k]

Well not so much harm but lower your performance and cause the vehical to run richer then usual.

[N2HIFI]

Well not so much harm but lower your performance and cause the vehical to run richer then usual.

i am sure you ment LEANER right ... because a larger TB "should" allow more air to enter the intake manifold Thus making the A/ F mixture ALOT leaner.



BUT in reality you can only flow as much air as the smallest opening in your intake track AKA the Intake manifold opening ... so a 70mm TB on a stock manifold WILL not allow more airflow into the motor, so unless you upgrade both OR port match the IM to the TB this is a usless mod

[02Type-S]

i am sure you ment LEANER right ... because a larger TB "should" allow more air to enter the intake manifold Thus making the A/ F mixture ALOT leaner.



BUT in reality you can only flow as much air as the smallest opening in your intake track AKA the Intake manifold opening ... so a 70mm TB on a stock manifold WILL not allow more airflow into the motor, so unless you upgrade both OR port match the IM to the TB this is a usless mod

yep yep

[luvmyhondas]

the only thing i've ever noticed by installing the larger tb on a 'nearly stock' or stock motor is the change in throttle response. I think it's due to the fact that a lower throttle angle on a large tb is allowing as much air to flow as a wider throttle angle on a smaller tb. Just my observation and best educated guess. No big deal really, just makes driveability a little different at first, then you get used to it.