TB on Boosted applications
- Thread starter Shawn1112
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I think if you go with the 112 mm you’re not gonna see much gain if any over the 103mm unless you’re making/going for power. If my memory serves me correctly the bigger throttle body similar to the 112mm on the Hellcat platform was much harder to tune on those cars, and there wasn’t much benefit,. It’s absolutely better to go bigger if the throttle body is a choke point, but I don’t think it will be in your application at 103mm.
Im running a Holley 92mm throttle body on my combo with a S491 turbo and have no plans on going larger
Blower or na car will see more benefit from a bigger throttle body because its harder to pull through it. Turbo car doesn't care so much about throttle body size as exhaust because it's pushing on the intake side.
I'd reach out to whipple and see what they say. With it being a street car, I'd be mostly concerned about losing some of the granularity of the part throttle control. The bigger throttle body may or may not make it feel more sensitive at part throttle when you're trying to just cruise and pull in/out of the driveway, etc.
If it's drive by wire, you can tune the throttle curve to less responsive at part throttle. Almost like the secondaries on a 4bbl carb that don't open until a certain throttle percentage.
If it's drive by wire, you can tune the throttle curve to less responsive at part throttle. Almost like the secondaries on a 4bbl carb that don't open until a certain throttle percentage.
Yeah if it's a huge throttle body on a drive by cable have fun. You can try and scale your tables but transients and cold starts can be a real bitch to get dialed in. Iac control is another thing that'll come into play here.
It’s going to be DBW as DBC would require a special bracket to be made by someone. The 3.0 isn’t set up for DBC
On the coyotes they run big throttle body’s on whipples, I had a 134mm on my Roush blower, the whipple stage 2 is a 150mm I think they make 160’s or possibly bigger now for the 3.0 whipple, going from like a 100 to a 140 would be a noticeable difference, 10mm isn’t going to be worth the extra money
Whipple said the 90mm on our 2300ax was too small.
There's a reason you see whipples with throttle bodies the same size as the end of the whipple.
It was a shit way I measured it but we were pulling 2in Hg atvthe shifts with the FAST 90mm and that was a 3" pulley.
Shoot ya might as well trade us for our smaller 2300.
The 112mm is 18% larger flow area over 103.
Then don't pay for a high dollar whore with her jaw wired shut
The 112mm is 18% larger flow area over 103.
Then don't pay for a high dollar whore with her jaw wired shut
With a PD blower, bigger is usually better. I would definitely ask your tuner though.
You can fit a grapefruit in this thing! Lol
You can fit a grapefruit in this thing! Lol
Turbo/centri’s and PD blowers are going to react vastly different when it comes to TB size.
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