Driveability issues with 70mm throttle bodies?

[KDR83]

Just picked up a set of SVS 70mm throttlebodies however have not installed them yet, are people still having driveability problems and throttle hand with 70mm TBs? I saw issues when searching but have not really seen anything in a while. My car has GG heads, T&D RR, M&M headers, no cats, Borla Exhaust, Hennessey Intake with 70mm outlets.

 

[Catwood]

70s here, no issues really but I have a tune from A&C. Original tune when I picked up the car had some surging issues at steady state. It's 99% gone after the A&C tune. Personally I don't think my original issues were due to the TB but rather the thump stick.

 

[karnatzel7]

Just installed 70 mm ARP throttle bodies with a SCT tune. 713 lb.ft. of torque and 656 hp. All on a 2001 Hennessey venom 650 R. Heads and intake were ported by Hennessey, along with the headers and exhaust.

 

[Dan Cragin]

The 70 mm throttle bodies work well with a bigger cam and a proper tune. On a stock motor they hurt low speed throttle response and only pick up 5rwhp.

 

[JohnnyBravo]

What kind of gains can you get with the larger throttle bodies on a built motor with heads/cam/blower?

 

[DrumrBoy]

Just installed 70 mm ARP throttle bodies with a SCT tune. 713 lb.ft. of torque and 656 hp. All on a 2001 Hennessey venom 650 R. Heads and intake were ported by Hennessey, along with the headers and exhaust.

Is your car NA? If that's NA and RW #s that's about the highest I've ever seen....