cubandeathgrip
OBS Enthusiast
I found a ton that works for a 97 305.
Any other suggestions for a y pipe with a high flow cat to muffler?
thanks
Any other suggestions for a y pipe with a high flow cat to muffler?
thanks
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thanks96-99 (2000 Escalade & Denali also) are the same. If it works on the 97, itll work on the 98
The vast majority of the Vortec trucks used a dual pipe, dual converter assembly that ends at a flange.
The very rare, Federal emissions equipped, Vortec 5.0 y-pipe is kind of a unicorn. Never seen a replacement, performance or otherwise. It's likely gonna have to be custom made.
Yeah, with less restriction your 1 - wire O2 didn't get hot enough at idle to work. The heated O2 doesn't rely on that.I removed cat on a 92 GMC recently and noticed at idle it wouldn't go into closed loop anymore. added a 3 wire o2 and it seemed to solve that issue
With only one O2 sensor, your PCM doesn't care what's going on downstream. But, a tune will always help with proper SA and AFR after your modifications. You can even get better performance with a stock system too.but is there stuff that should be changed in the calibration?
Yeah, your name looked familiarI want to try a single plane intake Fast355 recommended me on gearhead-efi a few years back
No, I didn't go that route - yet, ha ha.not to get hijack, but did you ever get your single plane dialed in??