what would be the best downpipe, testpipe combination to go with a hks hi power cat back exhaust

 

HKS downpipe creates the most torque of any company...otherwise, if you want most horsepower, go with a 3" downpipe...I personally use an Apex-i GT 3" downpipe....and then best testpipe is certainly Ultimate Racing. if you want torque, go with 2.5" if you want max horsepower go with 3" GT downpipe, and 3" ultimate racing testpipe.

 

it doesnt matter what kind of down pipe you get as long as it is 3' like the cat back exhaust. i not getting down pipe. i am order the high-flow cat for emmissions. as long as its the same size piping it does matter cuz then alls your doing is paying for the name.

but thats my opion...let me know if i am wrong..

 

have you guys opted for the cel fix for the high flow cats and test pipes so that a cel doesnt come up

 

just get 2 anti foulers drill one of the anti foulers out so the second one screws into it. Then screw your 02 sensor into in anti foulers then screw the anti fouler in the cat delete. Costs about 3 dollars, better then spending like 50 buck on a 02 simulator or what ever they cost. Theres a whole thread on it just search for it. If you cant find it PM me and ill explain it better. Oh im running full 3 inch turboXS RFL with cat delete and i love the thing.

 

the hi power is 2 and 3/4 of inch at the part where it would meet up with cat and flairs to 3inchs....i have used both the hks dp ( w/ no cat)and the dc sport dp w/ cat delete. i like the dc sport alot better, a i lill louder but picks up alot nicer on the top.

 

I've never heard of this. What's the reason for doing this? I guess i'm not sure what "cel" is either?

 

a cel in other words is your check engine light coming on from using a test pipe or high flow cat. Two anti foulers are used to restrict the amount of exhaust gas that the o2 sensor would pick up so you wont throw a cel.

 

I can't believe i've never heard of this before? I'm looking to get a 3" TBE in the next week. I'll have to look further into it? Thanks!

 

I put them in, and a half hour of driving aorund the CEL was gone and has never appeared again. I put it in about 7 months ago.

 

hey autobonevo how do you like your turboxs turboback. how does the butt dyno feel after it and what does it sound like. thxs

 

I like it alot, it fit perfect and never rattles or anything. Its loud but if im doing normal driving it's not bad at all im use to it now i cant even here it. When i get on it, its real loud but it has an awesome pitch to it. I dont know what a "butt dyno" is, fill me in and ill let you know.

 

lol a butt dyno in other words is can you feel a power increase.

 

ahahhaha i think i just got what you meant and IT PULLED really hard after the install. My cat delete came in 2 days later so i had the TB on with a cat for 2 days, and when i got the cat delete i FELT A HUGE difference.

 

what site did you get your turbo xs exhaust from