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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 07-15-2010, 10:16 AM   #1
juanmurillo
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Smile Best Way to get throttle response?

What do i have to change or clean or upgrade to get a better throttle response?? I know there's quite a few things out there but what is most effective and less of a hassle. Any info would be much appreciated, Thank you guys.
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Old 07-15-2010, 11:45 AM   #2
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Depends on what you mean by "throttle response".

If you mean how quickly the engine revs when you stab the gas pedal, a lightweight flywheel will help quite a bit, and underdrive pulleys can also make a small difference.

If you mean how much the engine responds to partial throttle inputs, a Sprint Booster will do what you want. All it does is remap the throttle so instead of 50% gas pedal = 50% throttle open, it will be 50% gas pedal = 65% throttle open. It makes the car feel snappier, but does nothing for actual performance or even the speed at which the throttle operates when you smash the gas pedal.
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Old 07-15-2010, 12:26 PM   #3
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ive heard the bimmertools update works really well.
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Old 07-15-2010, 12:31 PM   #4
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Originally Posted by Tangent_ View Post
Depends on what you mean by "throttle response".

If you mean how quickly the engine revs when you stab the gas pedal, a lightweight flywheel will help quite a bit, and underdrive pulleys can also make a small difference.

If you mean how much the engine responds to partial throttle inputs, a Sprint Booster will do what you want. All it does is remap the throttle so instead of 50% gas pedal = 50% throttle open, it will be 50% gas pedal = 65% throttle open. It makes the car feel snappier, but does nothing for actual performance or even the speed at which the throttle operates when you smash the gas pedal.
323's are cable throttle.

Cleaning out your Throttle body should help, as well as an intake system or higher flowing filter. With my flywheel, pullies, intake and shark injector, throttle response is alot better than stock.. imo..
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Old 07-15-2010, 12:48 PM   #5
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Push down more
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Old 07-15-2010, 12:56 PM   #6
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323's are cable throttle.

Cleaning out your Throttle body should help, as well as an intake system or higher flowing filter. With my flywheel, pullies, intake and shark injector, throttle response is alot better than stock.. imo..
Some debate elsewhere here about whether TB with cable is cable throttle or just that the cable is 'more directly' operating a motor.

I'd say first get your car fully maintained...filters everywhere...Techron with 93 octane...a nice run on the highway.

First, though, disconnect the battery for a half an hour...that solves many issues...don't ask, just works.

If it doesn't, then take a hose and listen to problems in engine...pulley, belts, hoses hissing...look inside with mirror and good flashlight (can't beat LEDs!)

I'd say, for the least amount of money, you should fix things that are broken, keep an eye carefully on things that might, spend a lot of time here searching and reading, get car to a fit level of maintenance, and then, if you're unhappy with your car then, either sell it and get a car you want to keep, or start buying the car you want over time by modifying components...but know there are risks associated with that.

Personally, for the least amount of money and the easiest overall to maintain well and always ensure you end up with a bmw, is use mostly OE or OEM components...just be careful on critical ones...bushings, anything electronic.

Your car sounds like it needs some care is all, and you'll do far better at giving it that than anyone else...indy mechs aren't going to start telling you everything wrong with your car unless they know you trust them, otherwise, they're oriented, for good reason, to just fixing broken things.

No offense to those who strap things onto cars to get, usually, not much hp out of it, but more issues are created when folks going looking for perfect, rather than being good with the 99%!

Doug
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Old 07-15-2010, 12:58 PM   #7
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Push down more
Pedal on the right, right?

I like disconnecting the battery better! It's not insulting and it provides sometimes needed placebo effect!

OP...just ignore this post...battery discon does do lots...resets adaptation levels in things to factory.
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Old 08-15-2010, 01:18 PM   #8
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Quote:
Originally Posted by Tangent_ View Post
If you mean how much the engine responds to partial throttle inputs, a Sprint Booster will do what you want. All it does is remap the throttle so instead of 50% gas pedal = 50% throttle open, it will be 50% gas pedal = 65% throttle open. It makes the car feel snappier, but does nothing for actual performance or even the speed at which the throttle operates when you smash the gas pedal.
Just get the Dinan (or any other brand) ECU tune. I've tried the Sprint Booster and it was too 'hoppy.' I got the Dinan stage 2 tune for $360 (Dinan has a sale now) and it adjusts the pedal response as well.

Tune for the same price as a Sprint Booster...common sense, really.
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Old 08-15-2010, 01:36 PM   #9
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Push down more
+1 or push more or push a little more or push a lot more.....that is LOL
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