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View Full Version : Prelimanary dyno #'s


2ltrgsr
04-03-2009, 02:31 PM
VaSpeed is installing my jba longtubes along with a tune

Current mods: roto-fab intake, corsa muffs_with custom x-pipe.

whp:308
tQ:324

with jba longtubes and tune

337whp
348lbs
r33pwrd
04-03-2009, 02:35 PM
349 / 361 is my guess :)
2ltrgsr
04-03-2009, 02:41 PM
do you think my before numbers are decent???
99-LS1-SS
04-03-2009, 02:46 PM
Yeah.
2ltrgsr
04-03-2009, 02:49 PM
yeah i was worried they were a little low...
2ltrgsr
04-04-2009, 04:26 PM
there up
used2vtec
04-04-2009, 04:45 PM
Do you have any pics of these headers. In the past on previous cars JBA was not really recommended. On the GTOs people really didnt gain to much and I had a JBA catback on my old truck and it wasnt very well built at all. Im wondering if they make a good quality header for the G8? You still picked up almost 30 horses with the LTs and a tune, not to bad if you ask me.
2ltrgsr
04-04-2009, 05:35 PM
yea the reason why there cheaper and not widely used is because they have to be welded to the exhaust....the actual header itself is very nice.