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Discussion Starter · #1 ·
Hi everyone

My wife rides a 2003 750 ace. It came with cobra pipes and she wants the originals back on for the noise factor.

Originally when I put the original pipes back on it wouldn't run worth a darn. I'd throttle and it would bog down. So I changed to a K&N filter, have taken the back rubber piece out of the air filter assembly and adjusted the air/fuel screws to 3 1/2 turns. Now I find I can ride the bike and it performs well except I always have to leave the manual choke out about 1/2 way and when stopped, it eventually stalls.

I know there is probably larger jets in the carbs due to the cobra pipes but I was hoping I wouldn't have to change them as in Calgary it will cost around $350.00 to go back to the original jets.

Any thoughts on whats happening and how I could avoid having to get the jets changed

Cheers
Al
 

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sorry to be the bearer of bad news you've done what you can to keep from avoiding a rejet with the exception of hole sawing the oe pipes not much more noise but more flow.

i had a similar problem with my 1100 when i went back to stock for a bit wasn't quite that bad but it didn't run right.

thankfully i have my open pipes back on now so no worries.

there may be someone here on the forum that kept the oe jets that may let you have them. you'd have to do the work yourself but it's really not that hard and it'd save you $350 which is alot of accessories
 
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