 How much BHP will a downpipe add to GT4 |
 Dec 4, 2006 - 3:15 PM
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 Enthusiast  Joined Mar 20, '06 From Ireland Currently Offline Reputation: 0 (0%)  |
I'm thinking of getting a downpipe or de cat for my GT4, im just wondering how much extra HP will it add to my gt4.
I was looking on ebay and they have a good few, what are the downpipes for $60 like? Or what is safe price range for a good down pipe that wont crack etc What do you think if these to downpipes. Downpipe 1 Downpipe 2 Thanks |
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Dec 4, 2006 - 3:44 PM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
they will work fine as long as you use the support bracket on the bottom (1st link includes it, 2nd one doesn't). then you will probably need to grind down the flange to make sure it wont hit your actuator. other then that, it will work fine. it might crack or might not...it all depends. you might also run into a fair bit of boost creep depending on how free flowing your whole exhaust is.
as far as gains go.... i dont know any specific numbers, but it was a huge gain on my car. i would say that its a nice 20hp or so, just based on how it feels. -------------------- 15PSI - 30MPG - Megasquirt Tuned
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Posts in this topic
alf15 How much BHP will a downpipe add to GT4 Dec 4, 2006 - 3:15 PM
alf15 Thanks for the advise lagos! Whats boost creep... Dec 4, 2006 - 3:53 PM
eggman40 QUOTE(alf15 @ Dec 4, 2006 - 12:53 PM... Dec 4, 2006 - 5:08 PM presure2 heres a dyno of a gen2 2.5" dp VS' stock:... Dec 4, 2006 - 5:48 PM Aus Not sure about exact gain, but you'll get much... Dec 4, 2006 - 7:10 PM alf15 Thanks for all the help lads, just got to send my ... Dec 5, 2006 - 8:23 AM Aus QUOTE(alf15 @ Dec 5, 2006 - 1:23 PM)... Dec 6, 2006 - 3:24 PM Kadett On UK forum it is said you would gain 15 BHP and 1... Dec 5, 2006 - 8:36 AM Kadett That will be my problem too, to get thru the APK (... Dec 6, 2006 - 3:33 PM lagos QUOTE(Kadett @ Dec 5, 2006 - 8:36 AM... Dec 6, 2006 - 4:26 PM Kadett It wasn't me
Dont know if the owner did, fo... Dec 6, 2006 - 4:30 PM jcbass7 if you reinforce the welds and use the support bra... Dec 6, 2006 - 4:36 PM raz128 The main options from the GT4oc are either the XS ... Dec 6, 2006 - 9:08 PM lagos QUOTE(jcbass7 @ Dec 6, 2006 - 4:36 P... Dec 6, 2006 - 9:50 PM x_itchy_b_x QUOTE(lagos @ Dec 6, 2006 - 11:50 PM... Dec 6, 2006 - 10:27 PM jcbass7 well here is what im planning on doing... let me ... Dec 6, 2006 - 10:37 PM |
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