Grunt6 Member 37 Member For: 15y 3m 30d Gender: Male Posted 08/11/09 06:33 AM Share Posted 08/11/09 06:33 AM Hey fellas, quick question, I dunno if its normal in these turbos or not, but im abit worried none the less.I have an 04 ba mk2 XR6 Turbo ute. It has a herrod motorsport exhaust system and the car is Automatic 4sp. Yesturday I had my center muffler removed on that exhaust as the exhaust was that quiet that I couldnt even hear it. I still have the rear muffler attached. I bought the car with the herrod exhaust already on the car. So I wanted to make the car abit louder so I took the muffler out. but what iv noticed is when im at quite high rpm just before the automatic changes gears, I get a heap of exhaust pops. Its only ever when I really plant my foot on the floor. Im guessing this was happening before I had the muffler taken off, just couldnt hear it.. Is this normal for turbo xr6 cars or is the something goin bad with the car. It only happens at high rpm when my foot is still to the floor. Cheers fellas Link to comment Share on other sites More sharing options...
Rhino1980 09JET Member 1,510 Member For: 15y 7m 16d Gender: Male Location: E. Maitland Posted 08/11/09 07:24 AM Share Posted 08/11/09 07:24 AM My FG does this too. Is it due to the rich factory tune (fuel igniting in the pipes between gears)? Link to comment Share on other sites More sharing options...
Grunt6 Member 37 Member For: 15y 3m 30d Gender: Male Posted 09/11/09 06:19 AM Author Share Posted 09/11/09 06:19 AM yeh I had an idea that was what it was. im getting a capa custom tune soonish so hopefully that will fix the issue, I also have a slight flat spot in the turbo when it pops aswell, so hopefully the tune fixes that. might be the fuel and air ratio is out. fingers crossed. cheers bud, Grant Link to comment Share on other sites More sharing options...
Rhino1980 09JET Member 1,510 Member For: 15y 7m 16d Gender: Male Location: E. Maitland Posted 09/11/09 07:42 AM Share Posted 09/11/09 07:42 AM Make sure to post an update when you get her tooned, and good luck. Cheers man Link to comment Share on other sites More sharing options...
Benny Member 1,869 Member For: 21y 5m 30d Gender: Male Location: Newcastle Posted 10/11/09 01:52 AM Share Posted 10/11/09 01:52 AM Grunt6,I'm guessing that your issue is tune related. Definately need to get in for a custom tune.Rhino,Your car will be making the burrp noise on shifts due to the spark retard on gear shifts to protect the gearbox. Great sound and turns heads.Benny Link to comment Share on other sites More sharing options...
mattyb Donating Members 1,097 Member For: 16y 7m 21d Gender: Male Location: Gold Coast, QLD Posted 10/11/09 02:22 AM Share Posted 10/11/09 02:22 AM The FG's actually cut spark to a number of cylinders at peak RPM gear changes and this causes a popping sound. Was a big write-up on this in motor/wheels magazine when the FG's were first released. Link to comment Share on other sites More sharing options...
Rhino1980 09JET Member 1,510 Member For: 15y 7m 16d Gender: Male Location: E. Maitland Posted 10/11/09 05:48 AM Share Posted 10/11/09 05:48 AM Thanks for the info Benny and Matty. When I get her tuned up, will it still do this cause I love the sound? It reminds me of an off-its-tits rally car Link to comment Share on other sites More sharing options...
Grunt6 Member 37 Member For: 15y 3m 30d Gender: Male Posted 10/11/09 05:50 AM Author Share Posted 10/11/09 05:50 AM cheer for all your input fellas, as long as its not hurting the ute, it doesnt worry me at all, im never goin back to an n/a car again hahaha peace fellas Link to comment Share on other sites More sharing options...
dule Donating Members 1,180 Member For: 17y 9m 19d Gender: Male Location: Sydney Posted 10/11/09 06:18 AM Share Posted 10/11/09 06:18 AM Guys he's got a BA, no spark retardation as far as I know. It was introduced in FG. It might be over boosting and pinging due to a free flowing exhaust. I'd recommend taking it for a tune as soon as possible and in the mean time keep it in the lower half of the rev range, otherwise you risk it going bang. Link to comment Share on other sites More sharing options...
sexual harrassment panda I see a red door and I want to paint it black Donating Members 5,919 Member For: 15y 3m 10d Gender: Male Location: Far north queensland Posted 11/11/09 06:59 AM Share Posted 11/11/09 06:59 AM stock cat? Link to comment Share on other sites More sharing options...
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