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Downshifting?
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All I know is that for a few weeks I stopped downshifting and I saved a noticeable amount of gas.
Mariano
2001 Titaniumsilber 540i Sport 6-Speed
1990 Diamantschwarz Alpha-N 2.5L ///M3
1986 Alpinweiss 325e M50B25 (R.I.P.)
-Talk to me when more sound comes from the induction than from the exhaust...
-Argentina........lo mas grande que hay.
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I always downshift, but it's always rev-matched (clutch in, neutral, clutch out, blip throttle, clutch in, next gear, clutch out)
And sometimes I throw some braking in there too. Gotta love the heel-toe action...Eric Austin
1990 325i Sterling Silver
///M3 CABs | ///M3 strut bearings | Bavarian Autosport springs | UUC Race Shifter | UUC Clutch Stop
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Originally posted by markseven View PostI
Unless you are running straight-cut gears, your tranny and dif (pretty much the entire drivetrain) are designed to transmit torque in one direction. Just my $.02 :D
I think you and Nando are the only people who caugth on to my R&P hill and toe statement. Most I think, thougth I was talking about pedals...
I cannot believe how many guys slow the car down by downshifting... :crazy:Whatever...(.Y.) R cool.
Falco rocks!
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Originally posted by M42Technik View PostAnyone here with a stock 318is motor can answer yes, we downshift constantly, because the motor STRUGGLES if you don't.
Haha, low rpms, a/c blowing, and a hill are three things 318iS's don't do at the same time.
The original question was about "using engine as a break" kinda thing...(.Y.) R cool.
Falco rocks!
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Originally posted by CleanAzzE30z View PostAll I know is that for a few weeks I stopped downshifting and I saved a noticeable amount of gas.
Mariano
If you simply put the car in nuetral and coast to a stop, your motor is using a little bit of gas. If you keep the car in gear until you stop, your car isn't using any gas.
-erik
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Originally posted by erik325i View PostAccually your car will use less gas if you keep it in gear or downshift.
If you simply put the car in nuetral and coast to a stop, your motor is using a little bit of gas. If you keep the car in gear until you stop, your car isn't using any gas.
-erikI Timothy 2:1-2
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Originally posted by markseven View PostWhat? If you are in neutral, the engine is at idle - if you down shift, your engine doesn't shut off, does it? Fuel is consumed in both scenarios.
If you downshift, the engine cuts all fuel (to slow you down). If it kept pumping fuel, downshifting wouldn't do anything, it would coast like a diesel.
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Originally posted by markseven View PostWhat? If you are in neutral, the engine is at idle - if you down shift, your engine doesn't shut off, does it? Fuel is consumed in both scenarios.
when i am slowing my car down, i used to downshift all the time...till killed my new clutch....but that was in a 3000gt vr4...and improper shifting came into play too...
that car is awd too, just like my ix...and those vr4s tend to have a lot of tranny issues....so in my case driving awd cars i like to save my clutch as much as possible...also cause its not cheap replacing a clutch and i have yet to do one...and those drivetrains have lots of parts in em
my ix is being put together and i just got a new clutch installed....i believe i will not be downshifting very much and using the brakes more often...but i will still be practicing r3v matched downshifts..when coming out of corners and stuff or to accelerate if neccessary...but mostly will be using brakes until i can really get the downshifting, down
anyone here have a clutch stop ?? im pondering getting one....but cant really think how it works?? is it where you kinda set it at a certain engagement point and prevent the pedal from going all the way to the floor, for quicker shifts? wouldn;t that increase wear on a clutch?
also who here when comming to a stop, before rolling off, keeps their car in gear with the clutch pushed in...even sitting at a red light....does that create any wear on a clutch?? as opposed to just putting it in neutral...until the light turns green then putting it in gear??e30s r kool
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Originally posted by 808BMW View PostIn neutral, the injectors are firing a small amount of fuel to keep your car on.
If you downshift, the engine cuts all fuel (to slow you down). If it kept pumping fuel, downshifting wouldn't do anything, it would coast like a diesel.
No fuel = engine not firing = no power steering, no power brakes...
I think you are mistakenI Timothy 2:1-2
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Originally posted by 808BMW View PostIn neutral, the injectors are firing a small amount of fuel to keep your car on.
If you downshift, the engine cuts all fuel (to slow you down). If it kept pumping fuel, downshifting wouldn't do anything, it would coast like a diesel.
oh damn my bad, really? i never knew that...so are you saying when you let off the accelerator...your not using any gas? i thought engines had to inject fuel and a spark in order to rev....e30s r kool
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