When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Also waiting on an 87 Porken chip, I've have the x-pipe though, did make a noticeable gain, and noticeably louder, but maybe that's also because i have no cats
Just curious if its still possible to drive in comfort that way, like for road trips and what not. I've been contemplating a RMB
While it is a bit on the louder side, its not a droaning sound. Its perfectly comfortable for me and the misses, its mostly louder when you get on it. During highway cruising its not an issue at all.
If the engine breathes better when clogged cats are removed, then the MAF will measure the extra air and all will be well. It is possible to optimise the fuel map for less rich fuelling at WOT and also to compensate for the slightly weak mixture in the mid range (off loop).
Hi John! thanks for your feedback, if I do not do the remap/optimization once I have installed the xpipe and removed the cats what kind of performance improvements I may get out of my MY88 S4? approx 10% CV is generally reported but is this going to be only at a certain range or widely distributed? Will I get some fuel consumption reduction as well? How about the noise if I leave the muffler and exh terminals unchamged?