creepshow

If I were to go with a larger TB what size should I use with my cobra intake? I have a larger MAF, (I think) 70mm? I don`t know how to measure it for sure. Does it say on it? Also.what would stock TB and MAF be for 1990? I will replace both if I have to and if it will gain any performance.

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razarr69

Well unless you have heads, cam or bottom end work, a 65mm should be fine. If you have some moderate amount of serious mods possibly a 70mm. The stock tb is something like 58mm I think and the MAF is 55mm, not sure on the MAF tho.

stanglx2002

a stock MAF is 55mm and from 87 up they are 60mm tb then 86 had a 58mm tb

creepshow

So would a 65mm TB and a 70mm MAF work good for my application? I have seen 65mm piping to replace your stock rubber elbow. This is the set up I`m looking at.

stanglx2002

i would go with a 65mm tb for your mods you dont have a serious amount of work done to the car to need a 70mm tb