I can never seem to get a clear answer on this but really is the best size for intercooler piping?
I tried on the 323gtx boards and they say 2 and 1/2, Then I have seen others say that you should have it smaller coming from the turbo and bigger after the intercooler towards the throttle body.
Can someone tell me without a doubt what size is best for the gtx bpt?
Best size intercooler piping for bpt?
- Franko
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Best size intercooler piping for bpt?
93 MX3, BP, Haltech E6X, Bully Six Puck Clutch, Pauter Rods, Wiseco Pistons, Port and Polish, Turbonetics T3/T4 Ball Bearing turbo and a partridge in a pear tree.
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Honestly it depends on the turbo and amount of HP you are shooting for. For the stock turbo 2.5 would work well if your going to turn up the boost. For a little less lag use 2.25 from the turbo to the IC then 2.5 from the IC to the throttle. For the fastest response and if your only planing on around 200-250HP run 2.25 all the way. There is no true single answer honestly. Trial and error with your setup and dyno time is the only way to find a single answer for you. Every car is different.
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- Josh
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well on a stock BPT w/VJ20 they use 2". i would assume that if your using the stock turbo that 2" would be the most efficent. i start boosting at 2300 rpm, and hit 8 psi at 2800 rpm, with the VJ14 hybrid. i know several Honda guys running T3's with 2" piping all the way. i dont think i would change it unless i upgraded the turbo to a bigger one.
Josh
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95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
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I was running 2.25 on my VJ-14 setup.
http://www.cardomain.com/ride/354836
B6T, APEXi Silvia IC, HKS SSQV, Magnacore KV85 Wires, NGK V-Power, Haltech E6K, Accel 300+ Digital Ign w/ coil, Accel 375+ controller, JWMmotorsports turbo manifold & exhaust, custom Garret GT-R series turbo, MAZDASPEED mounts, SRD Bushings, Pacesetter Short Shift, entire Pro LX drive train w/ custom ACT clutch (I'm the first to succeed this on B6T), Weapon-R, and lots more stuff!
B6T, APEXi Silvia IC, HKS SSQV, Magnacore KV85 Wires, NGK V-Power, Haltech E6K, Accel 300+ Digital Ign w/ coil, Accel 375+ controller, JWMmotorsports turbo manifold & exhaust, custom Garret GT-R series turbo, MAZDASPEED mounts, SRD Bushings, Pacesetter Short Shift, entire Pro LX drive train w/ custom ACT clutch (I'm the first to succeed this on B6T), Weapon-R, and lots more stuff!
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- Josh
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yah i am going to go bigger when i get a bigger turbo. i figured anything bigger than the exit of the turbo is just going to create more lag. so i stayed small with the 2".
Josh
95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
Face Book page http://www.facebook.com/pages/Mazda-MX- ... 3472959216
95' AWD MX-3 RST - (work log - http://www.mx-3.com/phpBB3/viewtopic.php?f=46&t=73765 )
94' GS - KLZE DD (work log - viewtopic.php?uid=2713&f=46&t=79063&start=0 )
05' MS RX-8 - Parted out and Sold :'(
Feedback - http://www.mx-3.com/phpBB3/viewtopic.php?f=37&t=49519
Cardomain Page - http://www.cardomain.com/ride/408020
Face Book page http://www.facebook.com/pages/Mazda-MX- ... 3472959216