Jasma exhaust - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

stevecorrado88 · 05-24-2011, 07:52 PM

So I'm running around 350 hp on a s13 sr and I have a older hks high power jasma exhaust. Could this rob hp from me or even cause a problem if I run high boost???

*fliprayzin240sx* · 05-25-2011, 01:02 AM

JASMA is a certification...if its a JASMA stamped exhaust, its probably restrictive due to the extra buffles to keep them quiet. It could be slightly restricting your power level.

stevecorrado88 · 05-25-2011, 08:21 AM

Yeah that's what I figured and it does have the stamp on it, it sound cool

*fliprayzin240sx* · 05-25-2011, 01:09 PM

Which HKS exhaust is it? Does it have a full boxy muffler down the line before the actual muffler on the car? If it is, you can take it to a shop, just have them cut out the pre-muffler and weld a straight pipe on it. Will make it just as good as any other non-jasma mufflers. Well, unless the pipings on it arent for the turbo s-chassis and not 80mm.

BestOneLeft · 05-25-2011, 01:12 PM

I would take off the Cat if you have one, Any resonators (meaning any type of muffler looking thing BEFORE the actual rear muffler)

And leave just the muffler tip.

What i did with a my sp

stevecorrado88 · 05-25-2011, 01:15 PM

It has the resonator on it, no cat and the piping is almost 4inch. I would cut it out but I didn't want to fuck with the exhaust cuz it's pretty cool

jr_ss · 05-25-2011, 03:59 PM

Then leave it alone if you don't want to fuck with it... Removing the resonator will make it much a louder exhaust.

stevecorrado88 · 05-25-2011, 04:16 PM

I'm not errors about loud I just want to no if I should buy a new exhaust n sell this one or keep this cuz it's not a problem with the amout of hp I have

05-24-2011, 07:52 PM	#1
stevecorrado88 Zilvia Junkie Join Date: Jul 2008 Location: ny Age: 32 Posts: 421 Trader Rating: (9) Feedback Score: 9 reviews	Jasma exhaust So I'm running around 350 hp on a s13 sr and I have a older hks high power jasma exhaust. Could this rob hp from me or even cause a problem if I run high boost???

05-25-2011, 01:02 AM	#2
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	JASMA is a certification...if its a JASMA stamped exhaust, its probably restrictive due to the extra buffles to keep them quiet. It could be slightly restricting your power level. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

05-25-2011, 01:09 PM	#4
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Which HKS exhaust is it? Does it have a full boxy muffler down the line before the actual muffler on the car? If it is, you can take it to a shop, just have them cut out the pre-muffler and weld a straight pipe on it. Will make it just as good as any other non-jasma mufflers. Well, unless the pipings on it arent for the turbo s-chassis and not 80mm. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

05-25-2011, 03:59 PM	#7
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,053 Trader Rating: (34) Feedback Score: 34 reviews	Then leave it alone if you don't want to fuck with it... Removing the resonator will make it much a louder exhaust. __________________ My SR20VET

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05-25-2011, 08:21 AM	#3
stevecorrado88 Zilvia Junkie Join Date: Jul 2008 Location: ny Age: 32 Posts: 421 Trader Rating: (9) Feedback Score: 9 reviews	Yeah that's what I figured and it does have the stamp on it, it sound cool

05-25-2011, 01:12 PM	#5
BestOneLeft Join Date: May 2011 Location: SOCAL Age: 34 Posts: 45 Trader Rating: (0) Feedback Score: 0 reviews	I would take off the Cat if you have one, Any resonators (meaning any type of muffler looking thing BEFORE the actual rear muffler) And leave just the muffler tip. What i did with a my sp

05-25-2011, 01:15 PM	#6
stevecorrado88 Zilvia Junkie Join Date: Jul 2008 Location: ny Age: 32 Posts: 421 Trader Rating: (9) Feedback Score: 9 reviews	It has the resonator on it, no cat and the piping is almost 4inch. I would cut it out but I didn't want to fuck with the exhaust cuz it's pretty cool

05-25-2011, 04:16 PM	#8
stevecorrado88 Zilvia Junkie Join Date: Jul 2008 Location: ny Age: 32 Posts: 421 Trader Rating: (9) Feedback Score: 9 reviews	I'm not errors about loud I just want to no if I should buy a new exhaust n sell this one or keep this cuz it's not a problem with the amout of hp I have