Originally Posted by TSD1959

I had the same problem when I installed the Bub 2into1 pipe on mine. It flowed the exhaust too freely and stumbled and popped in first gear.

Without the baffels, your exhaust is too free flowing. Sportster engines need a small amount of back pressure, or you will get a stumble when first accelerating, at about 2500 rpm's or so. Install an eyebolt and washer in the end of the muffler, and I'll bet your problem will be solved.

Do a search for "lollipop", there are several threads about it. About a $3.00 mod., so if that doesn't cure it, you're not out much $$. Easy and quick to install, so try that first.

Originally Posted by chevy94ss

Maybe put the baffles back in???

Originally Posted by schwingding

Well that's obviously a good diagnostic, but I want to leave them out.

Originally Posted by schwingding

Well, as we all knew, putting the baffles in corrected the performance issue. I may try the lollipop solution as well as I really did like the additional decibels. Both solutions are going to be easier than trying to figure out that SERT.

Originally Posted by Blackcherry Low

Well me and chevy didn't know otherwise we wouldn't have suggested it. Yeah, it was easy right?

Now go read up on the SERT, get the cable for 30 bucks and you can download the software for free. Then fix your AFR problem.

Originally Posted by schwingding

Thanks. i still plan on learning the SERT, where can I get the software? The stealer said he'd give me a cable as he has lots of them lying around, but didn't offer the same for the software.