Longtubes question...
Thread Starter
Burning Brakes
Joined: May 2002
Posts: 1,007
Likes: 2
Longtubes question...
I was thinking about getting these http://texas-speed.com/shop/item.asp...d=658&catid=20 (sponsor).
It says on the website that it connects into the stock H-pipe. Are the stock catalytic converters sufficient to see reasonable hp gains, or do I have to have spend another $600 and get an X-pipe with high-flow catalytic converters?
It says on the website that it connects into the stock H-pipe. Are the stock catalytic converters sufficient to see reasonable hp gains, or do I have to have spend another $600 and get an X-pipe with high-flow catalytic converters?
Safety Car
Joined: Jan 2005
Posts: 3,675
Likes: 58
From: Hayward (Bay Area) CA
With stock H pipe and cats, I don't think you'll gain the FULL benefit of headers. Yes, you'll need the complete system, X pipe and Hi flow cats to add to your headers - if you wana see the full potential. Thats just my opinion. I'm sure others will chime in soon..
Good luck
Good luck
Pro
Joined: Oct 2004
Posts: 578
Likes: 0
From: Folsom CA
Here is link to the dyno results of these headers connect to the stock H-pipe:
http://forums.corvetteforum.com/show...&highlight=tsp
with stock tune on a 99 C5 the car picked up about 19 hp & 30 lbs of tq
not bad for $650 headers
http://forums.corvetteforum.com/show...&highlight=tsp
with stock tune on a 99 C5 the car picked up about 19 hp & 30 lbs of tq
not bad for $650 headers
