Tuning help?
Thread Starter
Junior Member
Squid
Joined: Jul 2008
Posts: 2
Tuning help?
Need some tuning help from you pros.
#1. I get that popping from my stock pipes after I removed the rear baffle. The popping is only on deceleration when the throttle is closed. I like the popping, but is it damaging my engine?
#2. I live in Colorado, about 6000' above sea-level. I assume my bike was already running lean (and low on HP) when I bought it, because it absolutely will not power-wheelie. How do I tell if it is lean without dishing out $$$ for a dyno? Plug color? something like that?
#1. I get that popping from my stock pipes after I removed the rear baffle. The popping is only on deceleration when the throttle is closed. I like the popping, but is it damaging my engine?
#2. I live in Colorado, about 6000' above sea-level. I assume my bike was already running lean (and low on HP) when I bought it, because it absolutely will not power-wheelie. How do I tell if it is lean without dishing out $$$ for a dyno? Plug color? something like that?
mildly retarded
SuperBike
Joined: Mar 2008
Posts: 1,278
From: Denver, CO
#1 thats normal.
#2 I would personally take it to a shop. I took mine in thinking it may need some rejetting for altitude. they threw it on the dyno and said I didn't need new jets, all the numbers came up great. I took the bike to Fey Meyers Motorcycle World. Great place, esp. for a dealership.
cost me 80 cash.
#2 I would personally take it to a shop. I took mine in thinking it may need some rejetting for altitude. they threw it on the dyno and said I didn't need new jets, all the numbers came up great. I took the bike to Fey Meyers Motorcycle World. Great place, esp. for a dealership.
cost me 80 cash.
Senior Member
SuperSport
SuperSport
Joined: May 2005
Posts: 809
From: North Wales, PA
the popping is normal. enjoy. if you have stock gearing, you should be able to power up in first, but not quite in second. in first, do about 15-20mph with steady throttle, then back off the gas and then punch it. front end should come up like nuthin.
Slacker
Superstock
Superstock
Joined: Jun 2005
Posts: 489
From: San Antonio, TX
1. If your bike still has the a functional PAIR system then this would certainly account for the popping on deceleration. Perfectly normal condition. The opened up exhaust allows you to hear what has been happening all along.
If the PAIR has been disabled then it is an indication of leanness. A little popping in this instance will not have a negative effect on the engine, but richening the pilot screws a tad should help clear that up.
2. At your elevation with stock jetting you will definitely be running rich on your main jets. One size down should help out there and allow the front end to feel lighter at WOT. Also be sure that the air filter is clean.
If the PAIR has been disabled then it is an indication of leanness. A little popping in this instance will not have a negative effect on the engine, but richening the pilot screws a tad should help clear that up.
2. At your elevation with stock jetting you will definitely be running rich on your main jets. One size down should help out there and allow the front end to feel lighter at WOT. Also be sure that the air filter is clean.
Moderator
MotoGP
Joined: May 2005
Posts: 2,708
Not too sure power wheelies will be happening at 6k'. Open up the carbs and see what your main jets are... I believe 175/178 stock. If you have stock jets in there, then you're probably not running lean... your probably running a tad rich. Unless of course your jets have some blockage.
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mikstr
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