RWHP limit of S4 TII intake manifold
12-02-10, 06:13 AM
#1
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RWHP limit of S4 TII intake manifold
anyone know or have experience as to about how much power can be made through the stock manifold before needing to upgrade to something better?
12-02-10, 12:09 PM
#3
there really is no limit though but it will be a bottleneck after about 500WHP where switching to an FD UIM/TB will help. in n/a's it is more critical as it will halt your progress completely, in forced induction applications it just limits power exponentially after a certain amount of air is trying to be forced through it. with a big enough turbo for example even the S4 intake can handle 1000HP but a tuned intake with larger runners could probably do 25-30% more.
you can find an S5 LIM/UIM, it will help a little and can be found cheap and port match them, since that doesn't require much effort. but in the end it will probably only net maybe 1-2% hp. so i guess the question is is 5-10whp worth a couple hundred bucks for the work parts and effort finding the S5 UIM/LIM or a couple hundred more for the FD UIM to double that figure? i'm not sure.
12-02-10, 12:10 PM
#4
upgrading(replacing) the manifold can be benefial on anything over 300. but 450+ can, and has, been made on the stockers. this is one of those things that don't really have a limit. like stock ports.... you can street port/bridge port for more power, but you can leave them alone and still throw down plenty. infact, this a moot question all togather if you think about it.
12-02-10, 12:34 PM
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Hijack alert!
FD manifold and throttle body, is this doable on an S4 or 5? I think for FMIC, the S4 and S5 go like a snake before the original IC, so a FMIC would slow the air down even more.
FD manifold and throttle body, is this doable on an S4 or 5? I think for FMIC, the S4 and S5 go like a snake before the original IC, so a FMIC would slow the air down even more.
12-02-10, 12:34 PM
#7
with his current setup it is good for about 500WHP before the hybrid gives up, then onto a bigger turbo.
since he doesn't like to give specifics it is a full bridge S4 running 9.4:1 CR rotors, undivided tubular exhaust manifold with stage 4.5 BNR hybrid turbo, 3" full open exhaust, microtech LT8, overdriven modified supra TT pump and progressive methanol/water injection.
the FD UIM can fit with either a bit of modification or an adapter plate, which iirc japan2la sells for about a buck fitty.
since he doesn't like to give specifics it is a full bridge S4 running 9.4:1 CR rotors, undivided tubular exhaust manifold with stage 4.5 BNR hybrid turbo, 3" full open exhaust, microtech LT8, overdriven modified supra TT pump and progressive methanol/water injection.
the FD UIM can fit with either a bit of modification or an adapter plate, which iirc japan2la sells for about a buck fitty.
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12-02-10, 05:34 PM
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with his current setup it is good for about 500WHP before the hybrid gives up, then onto a bigger turbo.
since he doesn't like to give specifics it is a full bridge S4 running 9.4:1 CR rotors, undivided tubular exhaust manifold with stage 4.5 BNR hybrid turbo, 3" full open exhaust, microtech LT8, overdriven modified supra TT pump and progressive methanol/water injection.
the FD UIM can fit with either a bit of modification or an adapter plate, which iirc japan2la sells for about a buck fitty.
since he doesn't like to give specifics it is a full bridge S4 running 9.4:1 CR rotors, undivided tubular exhaust manifold with stage 4.5 BNR hybrid turbo, 3" full open exhaust, microtech LT8, overdriven modified supra TT pump and progressive methanol/water injection.
the FD UIM can fit with either a bit of modification or an adapter plate, which iirc japan2la sells for about a buck fitty.
answer your phone fool!!!
or call me!
and yes i will go with a much bigger turbo but was just wondering if that manifold is gonna hurt me if i go to 600whp or a little above that
12-02-10, 05:36 PM
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with his current setup it is good for about 500WHP before the hybrid gives up, then onto a bigger turbo.
since he doesn't like to give specifics it is a full bridge S4 running 9.4:1 CR rotors, undivided tubular exhaust manifold with stage 4.5 BNR hybrid turbo, 3" full open exhaust, microtech LT8, overdriven modified supra TT pump and progressive methanol/water injection.
the FD UIM can fit with either a bit of modification or an adapter plate, which iirc japan2la sells for about a buck fitty.
since he doesn't like to give specifics it is a full bridge S4 running 9.4:1 CR rotors, undivided tubular exhaust manifold with stage 4.5 BNR hybrid turbo, 3" full open exhaust, microtech LT8, overdriven modified supra TT pump and progressive methanol/water injection.
the FD UIM can fit with either a bit of modification or an adapter plate, which iirc japan2la sells for about a buck fitty.
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