kkswow12

would this require massive alterations to the motor, like cams, mapping, and i don't even know what else, and would it even make sense on an every day driver? tia, kk

Bill Verburg

You are looking at it backward, You use ITBs to be able to use happier cams, For street use where really racy cams are not going to be used you don't need ITBs, but If you want a really edgy street car that s also going to be a blast on the track you will want ITBs +cams+Engine management + lot of other expensive upgrades to support the increased rev limit you will then be using, You can spend ~$100k US easily for all this.

+most high end builds will want to use a GT3 type resonance manifold on top of the ITBs

Bottom like a used GT3 starts to look cheap.

wallra

you'd want to something like this. Increase low end torque. http://www.rothsport.com/Products/En...-Butterfly.htm

Talat

I'm going Rothsport Intake (essentially GT3 intake on top of ITB's), AEM ECU, bigger injectors, CoP (not necessary but wanted to junk the old coils/dizzys) on a stock 3.6 engine with aftermarket headers and muffler. Should be on the engine dyno early next year so will upload the dyno chart if of interest. May change the cams depending on the result of the initial tuning. Not the most efficient use of money but I was going to change the ECU/injectors anyway and so it snowballed from there.

Jjm4life

Very much looking forward to your results..

kkswow12

..

Raceboy

I've done few ITB conversions on 964/993. Tremendous change in throttle response but no way you can run them with factory ECU, you need a standalone ECU and not just any but the one that has proper Alpha-N/hybrid load tuning strategy (pure Alpha-N is not good enough if you want streetable car).

Here's stock 993 engine with GSXR ITB's, VEMS PnP, 200cpi cats with x-pipe (stock exhaust).

wallra

https://www.fvd.net/us-en/FVD1109000...or-street.html you will need to change your engine management system.