Hi All

I have searched the 17 pages in this section and can't find anything on the engine popping back, mine tends to do it a fair bit, does anyone else get this happening?

Can anyone explain why this happens and how it can be minimized??

Would be great!!!

Cheers

Its basically unburnt fuel that goes throught the engine and hits either hot exhausts or other burnt fuel and fires up and makes this popping noise.

The best way to get ride of it is to get a PC111 and get your bike dyno'ed and that should sort it out.

The other way is to when your backing off the throttle back off it completely as when you hold the throttle open a wee bit more fuel is pushed in and just burns off automatically.

I dont mind it really and its not too bad as i run with the baffles in on my CCC cans.

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Plough on

You guys need to read the modification index as 99% of your answers can be found there.

http://www.xt660.com/showthread.php?t=630

AIS removal stop your bike popping.

http://www.xt660.com/showthread.php?t=5544

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
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My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

this is outrageous!!! outrageous!!! I say!!!... "minimize the popping!!! What!!! are you mad???? how could you even think of such a thing!!! aargghhhhhh, this is part of the breed you know" blah blah blah... the bloomin louder the better... my round carbon CCCs are the best mod I've ever done .... the MOT man loves them bbbrrrrrrr outrageous!!!

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We're part of the solution... don't make us part of the problem!

My neighbor blocked the AIS but after 2 days he told me he can not ride like this and went back to the popping.

mine is blocked and i like it that way

thanks for all the info guys, just for the record I dig the popping back sounds, on the test ride these were one of the factors that made me say "this is for me"... was just curious on why this happened and how to fix it, thinking it may of been bad for the engine.

Once again, thanks for all the info gents, top work!!

I second that!!! I love the poping!!!

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