if i have a header and 2.5in piping with a stock cat and muffler with stated hp limits of around 210-220hp, if i do something to temporarily up my hp to 235-240ish+(forgeting for a moment that boost needs 3in exhaust)(yes im referring to NOS) my question is this: will i do any damage to my exhaust system running that much hp thru something not technicaly rated for that much?

thanks

USED TO HAVE...Everything you wish you had, and then some...

You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)

You planning on running a 100-shot on stock internals?

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98 ESi
95 GS

no, i was estimating(optamisticly) at my hp now (160ish?) with the mods i have(and going to) by the time i use n2o, using a 75 shot at most. definatly nothing over 75 shot on stock internals.

USED TO HAVE...Everything you wish you had, and then some...

You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)

2.5" piping is good for 300+ HP. Guys have made that on 4G's with 2.5". My friend made 315 on 2.5" exhaust at the wheels.

Derek

New Toy


Old toy: 1997 GS-T
8.4@87 1/8th pump/street tires

so i should be okay using a stock cat and GST muffler?

USED TO HAVE...Everything you wish you had, and then some...

You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)

Your stock cat converter can possibly cause enough back pressure to limit the HP potential of the NOS. I would highly suggest getting a 2.5" cat to go along with your exhaust piping.

SEA97GS
Sam Crawford
NW.DSM.ORG
15.73@86.91MPH

97 Eclipse GS-15.463@88.57MPH - RIP
92 Talon TSi AWD-12.927@105.47MPH

You could do a 2.5" catback for prob less than $200 with a test pipe or high flow cat at a muffler shop.

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98 ESi
95 GS

im a bit ignant about our stock cats. could i just cut the stock flanges off and have 2.5in flanges welded on to accomidate the new piping? or would it still be to restrictive because of the guts?

USED TO HAVE...Everything you wish you had, and then some...

You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)