I think they do if they run rich on over run?

 

me too

 

I know scoobs do it more commonly but thought it was cos they had different engine,management etc.

 

most early chips were copies of Group A rally cars, so yes, they squirt in extra fuel on over run to cool the pistons and valves etc, and of course this then gets ignited by the bloody hot turbo exhaust housing

 

isn't it when the exhaust is very hot and the unburnt fuel in there is igniting.

 

Mine does, OH SILLY ME, that's cus i've got antilag..


Rich i think Kev...

 

as said over fueling usually and normally sounds louder when exhaust is hotter.
when andy forrect remaps his scoobies you can get a pop and bang map or a normal one

 

Daviet, but is Over fueling safe??

 

My car pops a wee bit now it's feckin baltic ambient temps

 

does lots of it not cause bore wash? your asking the wrong person here

 

At least you're honest mate..

 

it will cool the pistons down.

 

ford sent them from fatory like it

 

Constant Rich(very rich) running causes bore wash and contaminated oil...

Running a bit rich after large periods of WOT when completey backed off the throttle is something different and perfectly safe

 

As above, its just fuel that hasnt been used in the engine.

 

Thats cleared it up for me,ta gents.

 

So, is this what cause some cossies to flame like fook on track and some not aswell.. exscuse my ignorance

 

depends on how they are mapped staffi...

 

Euan, just that people have SO many methods about how there cars flame and what causes it..

 

Mines used to spit flames for fun after Mark mapped but now only flames after a long period in 5th gear since Alan remapped it so it seems to be down to differnt mapping styles?


I think that a leaking exhaust used to cos some on my flames...they used to get so big that it was just crazy...

 

My old one used to pop and bang brilliant but it was over-fueling like fuck due to shagged chip and some cunt wound the regulator up bigtime previously, car was actually misfiring on way to ava to get set up with excess fuel

Thanks to AVA they sorted it out ,car ran brilliant and smooth and i was saving a small fortune on petrol

 

Yo big fella how's the family and the business ?

 

Most of the cars that flame a lot are helped out by a plug up the exhaust to make sure the fuel burns as it comes out.

 

also any exhaust leaks make it worse by letting in oxygen to add to the fuel and heat already there,completing the things needed for ignition

 

Braw Kev , were all full of flu and im still a moaning cunt so nae change there , business is doing well just now and hopefully some good amounts of work via a trader i did an X5 for on monday and scored a few regulars already, maybe even getting a full taxi fleet to valet before taxi-tests, so all in all no bad and still juggling my part time hours with my work aswell as self employment, lol aint had a day of in fookin ages and even had to turn work away this week sadly ,if that keeps up ill be handing my notice in fully at work to go full time on my own

Hows u buddy, Lookin after ma future saph

 

So that's 10p a pop on optimax

 

a foooked inlet manifold gasket also causes the car to pop and bang.

 

Thats great news then pal,youre future saph is going great,might be going for 400+ bhp soon.

 

Morning Dave

 

so if i was to ask the person who was mapping my car...."i want it to pop and bang, on over run" he wouldnt laugh at me?

 

out of interest are all the cossie that smoke pop and bang running L6 ecus???if so i have a poss reason

 

some of it is down to the filtering used for the inputs to the ecu of MAP etc

 

closed loop cars have a fuel cut on over run this is to prevent cat damage.......this may stop l8 p8 cars from popping,as mine doesnt......i have a 22+afr on over run