p5 hks hi-power axle-back on msp?
- Thread starter supman
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Striker187
Member
- :
- 2008 MS3 GT
no, it'll be shorter. you'll have to lengthen it. but don't get it. the piping is too small. it's only 55mm piping, which is 2.16". basically the same size as the stock stuff.
Striker187
Member
- :
- 2008 MS3 GT
yeah, any muffler shop can make it fit. but the piping's no bigger than the stock stuff.
supman said:
yes a muffler shop could make it fit, and technically you would be alright if you just used the muffler and had 2.5 in piping welded from the catback, but then that would be like buying a 300 some dollar muffler. thats pretty silly, so try to sell it. next time remember to check to see what applications the exhaust fits, and if all else fails start a thread asking if it fits or pmming someone with the exhaust.
supman said:
generally speaking, 2.25in-2.5in piping is good for N/A applications, and 2.5-3in is good for turbos. granted there are a lot of other factors (like the size of the turbo or engine), but basically a turbo needs unrestricted air flow to get the maximum potential, where the NA applications benefit from a slight "backpressure". hope this helps.
Striker187
Member
- :
- 2008 MS3 GT
piping's too small. for turbo apps, you want to reduce backpressure so that the turbo can spool more freely. getting an axleback won't do much powerwise since you'll still have all that stock piping ahead of it....and since the piping on the axleback is no bigger than the stock piping, you probably won't see any gains at all. just sound. you'll want to run at least 2.5" piping. i went 3". it's overkill but it won't hurt 
Striker187
Member
- :
- 2008 MS3 GT
ya beat me to it!
Striker187 said:piping's too small. for turbo apps, you want to reduce backpressure so that the turbo can spool more freely. getting an axleback won't do much powerwise since you'll still have all that stock piping ahead of it....and since the piping on the axleback is no bigger than the stock piping, you probably won't see any gains at all. just sound. you'll want to run at least 2.5" piping. i went 3". it's overkill but it won't hurt
frankly, on my NA application i noticed a difference with the HKS. but if anything at all, you wouldnt notice gains on a turbo...
Striker187
Member
- :
- 2008 MS3 GT
you could always sell it and go custom instead. just buy the hks hi-power muffler and get the piping made.
Striker187
Member
- :
- 2008 MS3 GT
i was quoted $225 for a 3" aluminized steel catback (not including the cost of the muffler). i ended up getting ss though. if you're just gonna get an axle back, i guess you could cut the price in half for an estimate.
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