I know some of you guys are running this cat. I am looking for a hi-flow that won't throw a CEL over time. Anyone running this cat for thousands of miles w/o a CEL? I heard that other hi-flows have and the Helix so far has not.

Also, is there much low end torque lost with running a hi-flow? I have the HKS DP and catback and it feels good with no noticible loss in low end power

Thanks for any replies.

 

I Just installed my Helix and have a few hundred miles on it. So far so good. The car feels so much smoother with it on, and it definately doesn't feel like i"ve lost any torque.

I am very happy with my purchase.

 

Thanks.

I think someone here has over 5K miles on theirs. Not sure.

 

I have a Random Technology high flow car at no CEL so far....granted it hasnt been on my car that long

 

I've had mine on for about a week. I too have the hks downpipe. No loss in low end torque. I can drive up my apt driveway (probably 20 degree incline) in 3rd gear a little easier than before. The car is more responsive especially at higher rpms. About the same amount of noise at idle, but louder when accelerating.

 

testpipe sincity,testpipe

 

is the hks downpipe you have 2.75"? how is the fitment, like do u have any clerance issues underneath the car? i have the helix dp right now but it rubs against the subframe and its starting the annoy the hell outta me. im interested in the hks.

 

I have had my Helix on for well over three thousand miles. I have not had any CELs from it at all. The only thing I got from this cat is increased throttle response and more power for sure.

 

I thought the HKS downpipe was almost 2.6 in. (65mm). The tanabe downpipe is 2.75 (70mm)

 

HKS fits like OEM. No clearance issues at all. The Helix DP is a full 3" and is a tight fit. I wanted some clearance, and for the stock turbo and O2 housing, the HKS is a good match even though it's a little less than 3". It will handle the flow of the stock turbo fine. My stock cat is the retrictor right now. I need to open it up.

I just ordered the Helix cat. I will review it and report back once it's on. Can't wait.