Gear Change pops!?
30-01-2012, 10:42 PM
#1
PassionFord Regular
Thread Starter
Gear Change pops!?
How do you get them! would you get it set up to run a bit richer or am i being a retard want to pop like this on gear changes
31-01-2012, 09:16 AM
#4
PassionFord Regular
Thread Starter
even the black one?? i rarely get a gear change pop out of mine rarely really get pops 
do i need to just get it setup at 15 psi and over fuel slightly?
do i need to just get it setup at 15 psi and over fuel slightly?
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31-01-2012, 04:02 PM
#8
Flat shift will do it everytime (like a rally car) but you wont get that on MFI! lol
I dont know what Jano is on about either, unburnt fuel igniting in the exhaust is no different on MFI to EFI, in fact your more likely to get it on an MFI RST running big boost then on EFI because you cannot map the fuelling properly.
I dont know what Jano is on about either, unburnt fuel igniting in the exhaust is no different on MFI to EFI, in fact your more likely to get it on an MFI RST running big boost then on EFI because you cannot map the fuelling properly.
31-01-2012, 05:54 PM
#9
Flat shift will do it everytime (like a rally car) but you wont get that on MFI! lol
I dont know what Jano is on about either, unburnt fuel igniting in the exhaust is no different on MFI to EFI, in fact your more likely to get it on an MFI RST running big boost then on EFI because you cannot map the fuelling properly.
I dont know what Jano is on about either, unburnt fuel igniting in the exhaust is no different on MFI to EFI, in fact your more likely to get it on an MFI RST running big boost then on EFI because you cannot map the fuelling properly.
But like you say, flat shift all the way
01-02-2012, 08:23 AM
#11
PassionFord Regular
Thread Starter
im under the assumption the more boost and fuel you run the more pops and bangs you will get? does anyone on here get some gear change pops or some nice pops and bangs in general..
With regard to knocking the fueling out i hit the limiter in 2nd and it took the fueling down quite a lot
With regard to knocking the fueling out i hit the limiter in 2nd and it took the fueling down quite a lot
01-02-2012, 09:50 AM
#12
Yes because when you let off the will be a certain amount of unburnt fuel make it's way out the exhaust and if it's hot enough it will ignite, the more boost you run the more fuel is needed so the more there is available to chuck out the back! I was peaking at 32psi and got the occasional pop but because I'm EFI and mapped correctly it didnt happen very often.
I dont see why hitting the limiter will alter your fuelling (it shouldnt do anyway) unless there is something wrong.
I dont see why hitting the limiter will alter your fuelling (it shouldnt do anyway) unless there is something wrong.
01-02-2012, 10:01 AM
#13
This happens with LPG cars too, they even have a flap in the air box to allow the pressure to escape.
But as for it 'knocking' the mfi unit out i don't know.
Rob,
01-02-2012, 10:04 AM
#14
A neutral plate position is normally level with the bottom of the cone, this is adjustable by bending a small clip / spring that acts as a stop at the bottom of the unit. The purpose of this spring is to allow the flap to move beyond its neutral position to allow excessive pressure to escape if the engine was to backfire, passing a large volume of air back into the air filter housing.
If the system did not have this facility the pressure could split or blow off the rubber air trunking. Any splits or ill fitting air hoses that allow unmonitored air into the engine require rectification.
If the system did not have this facility the pressure could split or blow off the rubber air trunking. Any splits or ill fitting air hoses that allow unmonitored air into the engine require rectification.
Rob,
01-02-2012, 07:10 PM
#17
PassionFord Regular
Thread Starter
05-02-2012, 09:24 AM
#19
PassionFord Regular
Thread Starter
05-02-2012, 02:17 PM
#20
Advanced PassionFord User
i'm on megasquirt so simply a case of going into the map and reducing the advance at the appropriate cells there's a screen shot of it somewhere i posted once
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