hi all
yeah as above...is it normal? i mean when i slow down(lets say doing 80 or 100 mph and start heavily slowing down (not very but slowing ) i can hear shots from the exhaust -pipe.. what is it?
cheers
its backfire, fuel igniting with the heat from the exhaust.. its normal n adds to the rotary noise lol.. luv it when mine does it :)
Fire Fire FIRE :)
Mate you need to do that at night & watch the world go Yellow!!
Jono
Yep, it is very normal, the Lady does it all the time - \'specially coming off WOT (",)
For maximum effect I fully recommend:
a) At night (lights up surroundings)
b) In a tunnel (sounds like a shotgun blast)
c) When some wee chav racer is following you and bricks it as she belches flame towards his sh!tty halfrauds universal fit \'front splitter\' (childish but funny)
mine has the OEM cat on, so to make it do this, coming down from high revs engine braking, I jab the throttle... BANG!
Love it! (though I am a bit worried my cat is gonna be mashed soon!)
Funny when driving through a busy highstreet or passing a bunch of old biddies LOL
Ha thats half the fun of getting a decent system on it & driving at night, boom bang pop... flame-age, jackpot!!
:D yup my FC does that, when comming off boost and then you touch the throttle :) nice popping sound :D
aye it is awesome.. i was coming down from *a good 70* after a good hard run and it sounded like an auto shotgun goin off :)
can get mine to do the odd pop but not loud and carnt see any flameage :(
Mine pops like mad when she\'s hot and flames quite a bit. Got a decatted racing beat and it rocks.
wish mine was decatted, cos I get no flames with the cat... :(
would get a lot more bangs too!
I\'ve got full catless racing beat and with the air pump connected i got loads of pops and bangs, when i disconnect it i hardly get any. Confused by this as the air pump does not do anything as the pipe is not connected to anything on the exhaust???
Still, it does sounds great, and i love the yellow flash at night
Quote from: Bobbit;505860I\'ve got full catless racing beat and with the air pump connected i got loads of pops and bangs, when i disconnect it i hardly get any. Confused by this as the air pump does not do anything as the pipe is not connected to anything on the exhaust???
Still, it does sounds great, and i love the yellow flash at night
You sure its not connected LOL...
Quote from: karl_tate;505848can get mine to do the odd pop but not loud and carnt see any flameage :(
I got flameage out of that car...maybe your just not driving it right :Giggle
A lot of the bangs may well be down to fresh air being drawn into the exhaust system around dry joints by the pressure change when the throttle is shut off after being open. You get this a lot on slip-together bike exhausts held together by springs rather than flanges. The air is sucked in through the joints and because it has a higher oxygen content than the already-burnt exhaust gas it exites the hot fuel molecules in the exhaust enough to re-ignite, hence the pops and bangs. It\'s also why Bobbit\'s pops and bangs loads when the airpump pipe is connected, it\'s basically injecting fresh oxygen into a really hot place with lots of fuel molecules wafting about! That\'s the three sides of the "fire triangle", that is; heat, fuel, air.
Sorry about the boring science bit. It ain\'t funny but it\'s true!
Bobbit said his air pump wasn\'t pumping though...
Oh, yeah. Maybe I made it all up, then! :Laugh I guess it\'s still pumping air down into the area where the de-cat is, though,even if it\'s not got a pipe actually into the de-cat itself any more. So it\'s still introducing lots of cold, fresh air just where there\'s a really hot bit of the exhaust with a few joints to suck the air in through.
Or am I talking b*ll*cks? Again?
The air pump \'injects\' air to 2 places. One for the center cat and one for manifold so im told :)
Mine doesnt seem to pop and make a loud noise but it does make 4 foot flames pour out of the exhaust for about 3-10 seconds after letting off after boost.
Guess its coz the microtech doesnt have a decelleration fuel cut set on it (was told that when running premix only its best to make sure the engine is always getting fuel, -and therefore premix oil, under all conditions)
Great party trick
Disconnect the air sensor, I got 16ft flames under the gantry at the Ring cos mine slipped off in the heat. Been held on with cable ties ever since !
Anyway, I got to drive through the Dartford tunnel in my rex today. Nuff said.
My baby does the best job when im really am beating it in first gear and taking it to 2nd then there is a BIG bang... And the best part is if im racing someone from a standstill it just makes the bang when the exhaust is just beside his side window.. Muaha some have been bitching about that ;););)
Hmmmm wonder if my fc will still do it one the Rensis is in it, will be running with no cats on a 3" system.... lets hope so!?!