How could i improve accelerate response

Raytec85 · 02-03-2016, 10:43 AM

Dear All,

I have been tune my car into RC chip, changed Downpipes, intake and exhaust. I found my car was response slow when i press accelerate. I did install sprint booster, it showed slight faster response, but i felt that still slow for me. When i press the accelerate, it takes 2sec to response.

Does anyone have a suggestion, what should i do to improve ?

taylor_green · 02-03-2016, 09:31 PM

I know my car is slow to respond when I am not in either Sport or Sport + mode. Also, these new 8-speed automatic transmissions make dropping from cruising the highway in 8th gear to accelerating in 4th a little bit of a task. Still, 2 seconds is a little long. Also, if you press your accelerator pedal into the floor, past the clicky-resistance point, you should basically put the car into Sport mode acceleration as long as your hold the pedal all the way down.

Raytec85 · 02-04-2016, 07:32 AM

Quote:

Originally Posted by taylor_green

I know my car is slow to respond when I am not in either Sport or Sport + mode. Also, these new 8-speed automatic transmissions make dropping from cruising the highway in 8th gear to accelerating in 4th a little bit of a task. Still, 2 seconds is a little long. Also, if you press your accelerator pedal into the floor, past the clicky-resistance point, you should basically put the car into Sport mode acceleration as long as your hold the pedal all the way down.

Yes, that's exactly my problems. Any suggestion i can improve it? or modified?

TomDenmark · 02-04-2016, 04:55 PM

Try make a video.. 2 seconds are a really long time. considering 0-100km/h can be 5 seconds.

You might have a problem, would be easy to say from a video

CharlieVu · 02-04-2016, 10:13 PM

I'm in for this. My car does it to. BMW replaced spark plugs but the throttle response still exist. When I try to get on the highway, I'll floor it in sport mode, it'll respond 1-1.5 seconds later. I read that the sprinter n jb4 sport mode should help but from what you're saying it's not resolving the issue. I read that you can code the car to shift better in the coding section. Have you tried that?

Raytec85 · 02-05-2016, 09:21 AM

Quote:

Originally Posted by CharlieVu

I'm in for this. My car does it to. BMW replaced spark plugs but the throttle response still exist. When I try to get on the highway, I'll floor it in sport mode, it'll respond 1-1.5 seconds later. I read that the sprinter n jb4 sport mode should help but from what you're saying it's not resolving the issue. I read that you can code the car to shift better in the coding section. Have you tried that?

Do you have the specific code to make it shift better ?

EvolutionFQ · 02-18-2016, 10:11 AM

Just take off your RC and do flash tune. Rc only increasing your power when you are in boost. But flash tune increse power both in off boost and in boost. It also re adjust your timing and AFR in all RPM. So the powerband is very linear. It also adjust your throttle response. And the most important one is it also increase your water pump pressure to do better cooling for your engine which piggyback cant do except dinan.

02-03-2016, 10:43 AM	#1
Raytec85 Private 17 Rep 86 Posts Drives: F34 Join Date: Sep 2015 Location: Singapore iTrader: (0)	How could i improve accelerate response Dear All, I have been tune my car into RC chip, changed Downpipes, intake and exhaust. I found my car was response slow when i press accelerate. I did install sprint booster, it showed slight faster response, but i felt that still slow for me. When i press the accelerate, it takes 2sec to response. Does anyone have a suggestion, what should i do to improve ?
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02-03-2016, 09:31 PM	#2
taylor_green Private 10 Rep 57 Posts Drives: 2014 328i Sport Join Date: Aug 2015 Location: SC iTrader: (0)	I know my car is slow to respond when I am not in either Sport or Sport + mode. Also, these new 8-speed automatic transmissions make dropping from cruising the highway in 8th gear to accelerating in 4th a little bit of a task. Still, 2 seconds is a little long. Also, if you press your accelerator pedal into the floor, past the clicky-resistance point, you should basically put the car into Sport mode acceleration as long as your hold the pedal all the way down.
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02-04-2016, 04:55 PM	#4
TomDenmark Second Lieutenant 61 Rep 205 Posts Drives: 14' 320i ActiveFlex Join Date: Dec 2013 Location: Brazil, SP - Valinhos iTrader: (0)	Try make a video.. 2 seconds are a really long time. considering 0-100km/h can be 5 seconds. You might have a problem, would be easy to say from a video __________________ 320i Activeflex - JB4 - Afe Airfilter - VRSF IC - ER DP - ER CP - @Ethanol
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02-04-2016, 10:13 PM	#5
CharlieVu Second Lieutenant 48 Rep 241 Posts Drives: 2013 328i x-drive Melbourn RED Join Date: Feb 2015 Location: Denver iTrader: (0)	I'm in for this. My car does it to. BMW replaced spark plugs but the throttle response still exist. When I try to get on the highway, I'll floor it in sport mode, it'll respond 1-1.5 seconds later. I read that the sprinter n jb4 sport mode should help but from what you're saying it's not resolving the issue. I read that you can code the car to shift better in the coding section. Have you tried that? __________________ Charlie Vu 2013 328iX Melb RED- JB4 - AFE 5R Intake - B14 Bilstein - Morimoto H1 Projectors and LED Angel eyes- Morimoto HD Elite 50w 5500k H.I.D.
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02-18-2016, 10:11 AM	#7
EvolutionFQ New Member 2 Rep 15 Posts Drives: Bmw 328i F30 Join Date: Sep 2015 Location: Indonesia iTrader: (0)	Just take off your RC and do flash tune. Rc only increasing your power when you are in boost. But flash tune increse power both in off boost and in boost. It also re adjust your timing and AFR in all RPM. So the powerband is very linear. It also adjust your throttle response. And the most important one is it also increase your water pump pressure to do better cooling for your engine which piggyback cant do except dinan.
	Appreciate 0 Quote