running without a catalytic converter......hypothetically, of course!
07-29-2004, 01:09 AM
#16
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Originally Posted by Jim bailey - 928 International
the Ott X-pipe and two high flow mufflers will add nearly 30 HP to an 89 GT . The X-pipe works !! Plus the mixing of the pulses in the X seems to reduce the harshness of the exhaust note compared to an old fashioned H pipe balance tube ....the H is better than nothing but does not compare to an X .
Hey Bailey,
I thought the 89GT's already had a free'er flowing set of primaries...
Can you enlighten?
Scott
07-29-2004, 01:22 AM
#17
For the GTS you may be able to run with the X and the RMB. The only time you really have too much sound is when the mid resonators are the small GT style ones (just small open cans). The larger S4 mids (and GTS mids too) are better at noise suppression and they actually sound really good without the rear muffler.
Later,
Tom
midlman@rennlist.net
89GT
Later,
Tom
midlman@rennlist.net
89GT
07-29-2004, 01:47 AM
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Originally Posted by Jim bailey - 928 International
the Ott X-pipe and two high flow mufflers will add nearly 30 HP to an 89 GT . The X-pipe works !! Plus the mixing of the pulses in the X seems to reduce the harshness of the exhaust note compared to an old fashioned H pipe balance tube ....the H is better than nothing but does not compare to an X .
So lets review. I get the X pipe from Devek, keep my original mufflers and replace my rear with an RBM?
Is this correct?
