so I was reading an article about the new HHR SS
#22
there must be a reason that UTEC cuts spark, not fuel, right? I think we nailed that reason. Flat shift isnt nice to the engine/drivetrain from the start, who cares if you shoot some flames when using it? Doesen't seem to be a funktion to use with a ceramic cataclyst anyway.
Edit: If you are using MS, it seems like you can choose, fuel, spark or both, with the soft limit being drasticly retarded timing.
#26
Problem is that it might be, mixture that didn't have time to get in the combustion chamber, but lingers on the other side of the inlet valve, when it opens, it goes in.
Nevermind, I haven't tried either, and it surely isnt anything you'd want for street driving. I just say, that it seems like standalone manifactors CUT IGNITION FOR A REASON.
Please, megasquirters, try it out, you can choose, cut fuel only, and monitor knock, prove me wrong please
Nevermind, I haven't tried either, and it surely isnt anything you'd want for street driving. I just say, that it seems like standalone manifactors CUT IGNITION FOR A REASON.
Please, megasquirters, try it out, you can choose, cut fuel only, and monitor knock, prove me wrong please
#27
These guys make flatshifters.
http://www.tekniqauto.com/US/tsport/tsport.htm
Read their info.
3. A fuel cut only system runs the risk of leaving small amounts of fuel flowing through the engine which may ignite risking lean burn and engine damage.
They also cut fuel, to eliminate flame shooting.
So, as I see it, cut fuel only -> knock knock
cut ignition only -> fire!
They should have some R/D behind their reasoning, don't you think?
If you are not convinced yet. Then i dont know how to convince you.
http://www.tekniqauto.com/US/tsport/tsport.htm
Read their info.
3. A fuel cut only system runs the risk of leaving small amounts of fuel flowing through the engine which may ignite risking lean burn and engine damage.
They also cut fuel, to eliminate flame shooting.
So, as I see it, cut fuel only -> knock knock
cut ignition only -> fire!
They should have some R/D behind their reasoning, don't you think?
If you are not convinced yet. Then i dont know how to convince you.
#28
Boost Czar
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ignition cut sucks. I dont see where most manufacturers cut ignition....it's a cat killer.
so here's your argument....you are worried about a tiny pissing of fuel that may/may not burn when you don't want it to....
but you want to fill your chambers up with fuel during ignition cut and then roast marshmallows from the flames out your tail pipe. that doesn't worry you one bit.
i had spark cut turned on and when i hit overboost protection a few times i remember the bazooka i launched out of my tailpipes and all the insurgents ducking for cover. (and i wondered why my cat got clogged?). It's violent and loud when it ignites again, great for keeping turbos spooled on flatshift, no reason for it otherwise.
monitoring knock during this situation will be pointless....it will look my jagged pimply ***. becuase of all the noise from the rev limiter and then WWIII.
so here's your argument....you are worried about a tiny pissing of fuel that may/may not burn when you don't want it to....
but you want to fill your chambers up with fuel during ignition cut and then roast marshmallows from the flames out your tail pipe. that doesn't worry you one bit.
i had spark cut turned on and when i hit overboost protection a few times i remember the bazooka i launched out of my tailpipes and all the insurgents ducking for cover. (and i wondered why my cat got clogged?). It's violent and loud when it ignites again, great for keeping turbos spooled on flatshift, no reason for it otherwise.
monitoring knock during this situation will be pointless....it will look my jagged pimply ***. becuase of all the noise from the rev limiter and then WWIII.
#29
Boost Czar
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Im glad you skipped over the ******* line just above what your god damn copied:
1. A spark only system on an EFI car will allow raw fuel straight through the engine and will rapidly contaminate the catalytic converter and destroy it. Excess fuel will also wash the bores and contaminate the engine oil system risking long term bottom end damage.
:f awk:
1. A spark only system on an EFI car will allow raw fuel straight through the engine and will rapidly contaminate the catalytic converter and destroy it. Excess fuel will also wash the bores and contaminate the engine oil system risking long term bottom end damage.
:f awk:
#32
geeez, since you've gotten personal, now, I can't see wtf you cant just recognize that cutting fuel only would be dangerous? too much of a following here to change your erlier position?
If you look some post above, i said that cutting both is best, but if i had to choose, i'd cut ignition. Cat's are no worries unless you run some shitty ceramic cat (witch suck), and come on, long term damage, yeah, same long term damage the guys who run 11:1 a/f will see, as is common with flooding. If you are running flatshift, I'd think that you check your oil from time to time, no?
and yes, i left it out, posted the link so that all of you could see it, only quoted the one sentence that i was talking about.
If you look some post above, i said that cutting both is best, but if i had to choose, i'd cut ignition. Cat's are no worries unless you run some shitty ceramic cat (witch suck), and come on, long term damage, yeah, same long term damage the guys who run 11:1 a/f will see, as is common with flooding. If you are running flatshift, I'd think that you check your oil from time to time, no?
and yes, i left it out, posted the link so that all of you could see it, only quoted the one sentence that i was talking about.