Im getting my new greddy Evo2 in this week and was wondering what would yield more performance; high flow cat or no cat /w a test pipe?My car is a 98 S.

Thanks for your time

 

Get a highflow cat - you'll definately be able to tell the difference. I have the EVO(non stainless)......i could definately tell that the flow was just so much better. Seriously - it sounds great also. Can't wait till you get it - report back with some feedback for everyone else.

 

sure will!what high flow cat do yall recommend?thanks for the advice kingpin,its a h22 vtec engine

 

Don't know - hmm......i don't have a high flow cat right now - i'm getting ready to buy one. I guess just look around. A high flow cat is a high flow cat - so don't get anything too expensive.

 

Magnaflow is a good one. I just bought a 2.5" universal off of ebay for $104 shipped. I'll see if I can find the seller's name.

EDIT: Seller is elpasonomad

 

the guy at one of the local import stores told me that magnaflow isnt a true high flow cat...?

Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doctorcarta &raquo;</TD></TR><TR><TD CLASS="quote">the guy at one of the local import stores told me that magnaflow isnt a true high flow cat...?

Thanks</TD></TR></TABLE>


What was he trying to sell you in its place?

 

he told me that a true high flow cat costs around $300,and that he could get me one if i gave him the money.

Thanks

 

does anyone recommend a brand/website?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doctorcarta &raquo;</TD></TR><TR><TD CLASS="quote">does anyone recommend a brand/website?</TD></TR></TABLE>


carsound, random technology

 

what kind of performance(whp and torque) would i receive from a random technology high flow cat vs. test pipe on a evo2.whats the purpose of a up and down pipe and is it worth replacing?etc...and why can i only post 5 times per 24 hour?

 

Because ur a noob.. J/K that's for trial users it'll go away soon

test pipe and o2 Sim prob a 3 hp increase

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doctorcarta &raquo;</TD></TR><TR><TD CLASS="quote">what kind of performance(whp and torque) would i receive from a random technology high flow cat vs. test pipe on a evo2.whats the purpose of a up and down pipe and is it worth replacing?etc...and why can i only post 5 times per 24 hour?</TD></TR></TABLE>

up pipes and downpipes are for turbo'd cars... it diverts the exhaust to the turbo and away from the turbo..sometimes people refer to the bottom half of the two piece header as a downpipe too..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doctorcarta &raquo;</TD></TR><TR><TD CLASS="quote">what kind of performance(whp and torque) would i receive from a random technology high flow cat vs. test pipe on a evo2.whats the purpose of a up and down pipe and is it worth replacing?etc...and why can i only post 5 times per 24 hour?</TD></TR></TABLE>

dont use a test pipe, it will sound like **** and ur not even getting a 3 hp increase

 

thanks guys!so what kind of increase am i looking at with a highflow cat or would you get a better increase bypassing the cat and using a testpipe?

Thanks

 

bump

 

can anyone answer my last question,if i was to use a test pipe what do i do about that o2 sensor in my cat?