Z06Vette.com - Corvette Z06 Forum

Waterfreak · 11-25-2002, 01:39 PM

Installed the FLP LT header system last night w/o the cats. It's really loud w/Borla Stingers. The cops are going to be all over me. I'm thinking of putting the high-flow cats on that came with the system. Anyone know how much quieter it makes the system? What about hp? Given the mods in my sig, will using the high-flow cats lower hp measurably? I'll be going to dyno to tune once I am satisfied with all the mods. As usual, thanks the help guys.

ZO6Cam · 11-25-2002, 01:50 PM

Its quite a bit quieter with the cats on, and you lose roughly 10rwhp.

Waterfreak · 11-25-2002, 01:54 PM

That's a considerable loss of rwhp. Is that w/o any tuning?

ZO6/Les · 11-25-2002, 02:49 PM

I agree it quiets down a lot with the cats on. In my case with MAFT tuning done at the time I lost 8 RWHP with the cats on, so they are in the box

Les

Quote:

Originally posted by Waterfreak
Installed the FLP LT header system last night w/o the cats. It's really loud w/Borla Stingers. The cops are going to be all over me. I'm thinking of putting the high-flow cats on that came with the system. Anyone know how much quieter it makes the system? What about hp? Given the mods in my sig, will using the high-flow cats lower hp measurably? I'll be going to dyno to tune once I am satisfied with all the mods. As usual, thanks the help guys.

ZO6Cam · 11-25-2002, 02:54 PM

Quote:

Originally posted by Waterfreak
That's a considerable loss of rwhp. Is that w/o any tuning?

Tuning or no tuning, you're gonna lose 8-10 (at least) because of added backpressure.

fcalmes · 11-25-2002, 03:13 PM

I have the FLPs and just took the off road pipes off and put the high flow cats back on. Waaaaay too loud for me!!

Also took off my B&B PRTs and put stock pipes back on. The noise was getting obnoxious.

Sounded good though!!

sconi · 11-25-2002, 03:51 PM

How yuh doin, Frank??!! I'll type this real load so you can hear me! Are you running the stock exhaust or Borla, Corsa's etc??

sconi · 11-25-2002, 03:53 PM

WQoops, sorry about that Frank. I just noticed that you put the stock exhaust back on. How much louder than stoc are they now?

fcalmes · 11-25-2002, 04:03 PM

Quote:

Originally posted by sconi
WQoops, sorry about that Frank. I just noticed that you put the stock exhaust back on. How much louder than stoc are they now?

The Z seems pretty tame now, but it is still louder than Sherylann's by maybe 30%.

ZO6/Les · 11-25-2002, 05:03 PM

Frank,

Admit it you sissy, you didn't like the smell either

How OLD are you

Les

Quote:

Originally posted by fcalmes

The Z seems pretty tame now, but it is still louder than Sherylann's by maybe 30%.

fcalmes · 11-25-2002, 05:56 PM

Quote:

Originally posted by ZO6/Les
Frank,

Admit it you sissy, you didn't like the smell either

How OLD are you

Yeah, stunk like sheee-ite!!

Not telling my age, but I knew Moses!!

Silver Bullet · 11-25-2002, 07:57 PM

The big restriction is the cats.
I had the same exact no cat borla stinger setup and I agree it was out of control loud.
Went back to stock catback (still no cats though) and car sounds great and didn't seem to lose any power at all.
Like they always say remove the closest restriction first.

Waterfreak · 11-25-2002, 07:58 PM

I loved the sound and the smell was great. Just like being at the track. But, I just knew the cops would be pullin' me over and takin' a looksee down under. Sooooo, the cats went on tonight. It definately mellowed out the sound. It still sounds great though w/the Borla's. I'll miss the smell and my pants tell me that I did in fact lose some ponies. But, I should get more once I have a tuning session. Wasn't hard to put the cats on, but it was a bit difficult getting the v clamps off. Had to use a screw driver to pry them off those pipes.