AngryRB Posted February 3, 2012 Share Posted February 3, 2012 Just need some opinions on this, would there be any benefit or even issues with a 4inch intake comming off a gtx3076 with 4inch anti surge compressor housing? thinking of having a 4inch intake then reducing down to 3inch and putting filter down in the front bumper, so second question is will the afm being X distance from turbo and having 4inch pipe behind it be an issue with idle/running? Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/ Share on other sites More sharing options...
scotty nm35 Posted February 3, 2012 Share Posted February 3, 2012 4 inch intake and map sensor, run the AFM in the hot pipe or mount the AFM in a 4 inch pipe. Any other way and you may as well run 80mm to the turbo imo. Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217662 Share on other sites More sharing options...
AngryRB Posted February 3, 2012 Author Share Posted February 3, 2012 4 inch intake and map sensor, run the AFM in the hot pipe or mount the AFM in a 4 inch pipe. Any other way and you may as well run 80mm to the turbo imo. so run the afm just after the turbo outlet and before the intercooler and then use 4inch from turbo to filter plus use a 4inch filter pod , yes? Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217668 Share on other sites More sharing options...
scotty nm35 Posted February 3, 2012 Share Posted February 3, 2012 Sounds good, you will obviously need a retune though. Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217678 Share on other sites More sharing options...
JonnoHR31 Posted February 3, 2012 Share Posted February 3, 2012 afm before the turbo is fine, just use a 4"-3" reducer somewhere between the turbo and afm. aslong as theres a bend and atleast ~400+mm between the turbo and afm it'll be fine. Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217686 Share on other sites More sharing options...
AngryRB Posted February 3, 2012 Author Share Posted February 3, 2012 ok cool , ill make sure its 40mm atleast, my thinking with the 4inch pipe and 4inch filter was that at say 20psi or later on at 24psi , it might give greater response and more power, similar to having a 3inch or 4inch dump pipe when the turbine is only 60mm it may squeeze a little more out of the setup. Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217703 Share on other sites More sharing options...
Bsa Posted February 3, 2012 Share Posted February 3, 2012 How much power you going for Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217720 Share on other sites More sharing options...
scotty nm35 Posted February 3, 2012 Share Posted February 3, 2012 The GTX3076 should be good for at least 300, probably over 350 on e85 so the 4 inch would be needed for sure. How long before the tune? Cant wait for your results. Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217730 Share on other sites More sharing options...
Dajae Posted February 3, 2012 Share Posted February 3, 2012 GTX3076R flows a fair chunk more than its little brother. Not only that, but those fancy compressor wheels dont come alive until after 25psi. Saw a video of one push ~500rwhp. I think it was a red or pink S14? I thought afm's didnt like being on the discharge side of things? Ty. Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217884 Share on other sites More sharing options...
R31Nismoid Posted February 4, 2012 Share Posted February 4, 2012 afm before the turbo is fine, just use a 4"-3" reducer somewhere between the turbo and afm. aslong as theres a bend and atleast ~400+mm between the turbo and afm it'll be fine. +1 Will be fine going from 3"-->4" It's how virtually all other set-ups do it Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6217983 Share on other sites More sharing options...
AngryRB Posted February 4, 2012 Author Share Posted February 4, 2012 (edited) How much power you going for Id be happy with 300-320rwkw with a huge torquey midrange, just ordered tomei cams, and later might go E85 with some forged pistons. is a few weeks off tuning, hoping the HD exedy will hang on too, a few issues to deal with yet. so has anyone put the air flow in the cooling line and ran 20psi without issues? Edited February 4, 2012 by SliverS2 Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6218284 Share on other sites More sharing options...
JonnoHR31 Posted February 4, 2012 Share Posted February 4, 2012 so has anyone put the air flow in the cooling line and ran 20psi without issues? yes people have, but other people have completely busted them doing this too. leave it in the standard position. Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6218285 Share on other sites More sharing options...
AngryRB Posted February 4, 2012 Author Share Posted February 4, 2012 yes people have, but other people have completely busted them doing this too. leave it in the standard position. sounds like the most reliable position, thanks for the input guys Link to comment https://www.sau.com.au/forums/topic/390439-afm-position-and-intake-size/#findComment-6218326 Share on other sites More sharing options...
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