I got my Helix SS Test Pipes installed today. The guy that installed them said that the fitment was perfect. There is definitely raspiness with these on now, but I can deal with it for the added power. Each TP is about 10 lbs lighter than the OEM Cats.

Zach

 

Here are some pix of the TP and the OEM Cats.

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How much did you get them for?

 

They were $176.95 including shipping from SP Engineering.
Their website is www.sp-power.com

 

Holy crap.. thats awesome. Good power increase?

 

There seems to be a good increase. I am going to an AutoX this weekend and I will be able to tell for sure then. The new sound is almost annoying though. Kinda reminds me of a civic. Ill live though.

 

REally... does it totally overshadow the stock exhaust sound?

 

Can you gives us a sound clip? TIA

 

I do not have any way to record a sound clip that I am aware of. If I think of a way to record one, I will post it.

 

hehe i agree with you zach. the helix tp add good power but the sound is very annoying. At first I thought something was vibrating against the crossmember but that doesn't seem to be it. however combined with the greddy evoII exhaust i'm pretty amazed at the difference in acceleration. Also I have a question, when you're gunning it, then let off, do you get a weird type of sound that sounds like fuel moving coming from directly underneath you?

 

DO u get check engine light?

 

Nope, no CEL!!

 

back to the issue of the raspy sound, any way to get rid of it? I really should have waited to put these on cuz now I can't really tell what my greddy exhaust sounds like with these freakin test pipes.

 

How does your exhaust sound with the pipes and Greddy exhaust? I am contemplating a new exhaust, but I dont want to spend a grand for a system and installation. PLus I have heard its too expensive for the little gains that are seen. I guess its whatever makes the person happy!!

 

I'll post a videclip soon showing me at wot and idling.

 

looking forward to hearing it

 

How do the test pipes sound with a stock exhaust and what kind of gains are expected?

 

As far as sound goes, I think the test pipes make my car sound like a civic. I think that Helix claims that these test pipes make gains of about 5-8 hp, but I could be wrong.