75 mm vs 70 mm TB/plenum

[supastang03]

what would u guys reccomend? there is a possiblity i may go KB blown, but its only about a 25% chance. should i wait, or go 75 mm in case of the blower? or is the 70 mm better? as u can tell im not very savy on the TB info, so someone fill me in!!

 

[helty]

75

 

[propellerhead]

I have no tech data to present but from reading tb/plenum threads, I think the consensus is go with the 75. You may not see any difference now between the 70 and 75 but you won't be losing anything either, and you'll be set up if you get boosted later.

 

[BooWFO]

I'd say if your gonna do it get the 75. Some have said their off idle response with a Mildly modded NA car is down a little with a 75 but once you start modding it some more it seems to go away. Also I think the reason some go 70mm is some racing classes only allow up to a 70mm tb.

 

[OUR01GT]

I would go ahead with the 75mm if your thinking about the KB.

 

[SLY GT]

Get the 70. It will perform better if you stay NA. If you get a blower the difference is small about 2-3 hp. Go to Kenne bells site they have good info on it

 

[Jackie Chan]

I'd say if your gonna do it get the 75. Some have said their off idle response with a Mildly modded NA car is down a little with a 75 but once you start modding it some more it seems to go away. Also I think the reason some go 70mm is some racing classes only allow up to a 70mm tb.

thats how street stang was, and that is why i had a 70mm. like already said, the difference either way is minimal at most. I picked up 1.5+mph untuned with my 70mm accfab setup

 

[03trubluGT]

Another vote for 75.

Even if you stay N/A, it won't hurt you. I ran around with a 75 before I put on the KB and was making 272/310 at the wheels with Steeda UD pullies, BBK LTs, BBK OffroadX,l Mangnaflow CB and Accufab 75mm TB w/ Accufab plenum.

Matt

 

[Mike97gt]

personally i like the 75

 

[Mustanggt108]

its all up to you . You need to make up your mind about the KB.If you stay NA you will benefit more from the 70mm . But if you will S/C your car , along with full exhaust upgrade then go with the 75. I personally have a 70mm TB+Plenum . And i'm going with the mongoose kit soon enough.I read 100's of threads about this so i went this way.Its all up to you.