Any one who had used fast intention high flow cat please share your opinion and experience.How they sound and how they perform? Thanks

 

I actually also wanted to know what the difference was between the 400 and 300 cell? Based on the web site, the 300 cell is more recommended if you're doing FI and 400 is for NA?

 

I have the 400 ceramic on my car along with the cat back. No problems what so ever and the fitment was A+. The 300 are metallic and can take more heat that FI cars put out. The 300 metallics won't disintegrate like the 400 ceramics will.

 

I've got a set of 300 cell metallic on their way. They shold match up well with my FI Intimidator exhaust. - Can't wait.

 

any dynos? complaints?

 

I have the 300 cell for the JWT TT, have had no problems what so ever. Fitment was spot on. It took away the foul smell I was getting from the Megan RTP.

 

I had the metallic 300 cell on while NA and tried to keep it going FI. Performance is outstanding, for a 300 cell cat. It kept up with boost till about 12 psi, then it was still too much backpressure to make power (700bb twin turbo). At 12 psi, with the FI hfc, it made 420 whp on a DD dyno (about 460 whp dynojet). Impressive, but it wasn't going to let me get to 500 rwhp on a DD dyno (550 Dynojet) which was my goal. I'll have my set (used for about 6 mos NA and only 1 session on the dyno after going FI) in the marketplace next week.

 

The Ceramic/Metallic Berk Tech HFC's FTW!!!!!