see a scooby last night with the normal roar and grumble but as it lifted made a big pop and a couple of bangs on the over run how does this happen? is this due to a de cat?

 

its a mix of De-Cat what Zorst your running and a Remap

wasent in thurrock you saw the scoob was it?

darc

 

ah see i have a standard prodrive exhaust
it was up near basildon

map i have the one on the prodrive pack standard
im no good with a scoobs lol

 

mine pops like a *****, not had remap only just bought car two weeks ago. got a decate pipe and some other trikery, swear it makes girls screem at night lol. usualy happens when you accelerate fast then take foot off quickly and leave it of

 

the decat helps but it is a mixture of timing and fuel changes in the remap.

 

Mine always pops and farts even if i drive it easy, it's the cars way of telling you you've just done another fiver of juice! lol

 

Mine too it

 

Mine pops and bangs like a machine gun, trust me you don't want this on your car

 

As Duncan suggests above - Subtracting lots of timing and adding plenty of fuel to the top column/row of the map will cause the car to pop and bang on the overrun. - Bit of a gimmic really

 

Can't do the motor any good, long term, surely?

Don't see the point, if so - 'vanity' over reliabilty/longevity(?)

 

Doesn't help the MPG too much either

 

yes on apexi or the left hand column on newage maps

Yeah it is a gimmick but it is good fun

 

On all the Apexi's, you can also lift the overrun fuel cut RPM threshold to good effect., using the A/C swithch as the on/off control

AFAIK, Ecutek have definitions which include tables for Overrun Fuel Cut RPM and Delay on some ecu's - I havent seen this feature in any of the Romraider definitions though

 

going from a re-circ to a VTA dumpvalve can give you some pops too. the standard map assumes there will be some recycled charged air available and so fuels it a bit, but if the charged air is dumped to atmosphere you get a rich spot on the over run. I think thats why anyway? lol! i deleted my DV all together so don't get it much despite aftermarket exhaust from up-pipe back and a new map. one or two but not manny. i do miss it! but not the HKS dumpvalve!

 

ah thats what i mean

 

Ah yes, the rev limit is raised for when the A/C's on - I've noticed that on the Commander.

Does that mean, with a really hot exhaust and A/C on, it might allow pops/bangs on the overrun?

 

mine has them as part of the map but like others say it is turned on or off with the A/C so early morning etc i can turn them off otherwise it does sound pretty good!

 

Mine pops an bangs with ease especially after lifting off the gas ,decat,vortex and blitz vta seem to account for this,i've had the standard recirculating valve on for the last 3 days,and funnily enough doesn't seem to do it anymore.

 

Snap! I've just put the standard recirc' back on

Still get a few pops tho'

 

i do i do i really do

 

Then get thee sen a BEE*R rev limiter wired up

 

Mine popped (or did it bang) at the petrol station t'other day ... the old lady serving gave me a serious glare

TX.

 

You can set the apexi up so its switchable via the aircon switch

 

My V3 STI RA with sports cat and H & S system pops and bangs with standard ECU. 1st gear in traffic if you accelerate then lift off and it makes a noise like a microwave full of popcorn, the occupants of the X5 behind me with blue lights on top was giving me a funny look.

 

Soon as i had a full decat system fitted and a Turbosmart dv, i started getting some pops and bangs lol.

 

Anti-lag!!

YouTube - Subaru Impreza WRX STI GC8 Antilag Simtek spitting flames