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-   -   Throttle response (http://www.focusfanatics.com/forum/showthread.php?t=300323)

suterp 10-20-2012 04:24 PM

Throttle response
 
I bought a '13 Focus SE 5 speed a couple of weeks ago. Really enjoying the handling, the awesome manual transmission, and the smooth revving engine, but I've noticed the throttle response is pretty poor. I have an '08 scion xD with only 128hp that feels a lot quicker off the line due to the throttle response and possibly the gearing, not sure. The Focus pulls harder once you get going and feels decently strong in 2nd-5th gear but weak in 1st gear. Has anyone else noticed this? What it my best bet for improving throttle response? Intake or exhaust or wait for an ECU remap?

GN Prime 10-20-2012 05:35 PM

u have drive-by-wire i believe. my '11 is the same way:( i have a fswerks cai and stealth exhaust. both made a major improvement on acceleration. but the ecu has to be reconfigured to get past the throttle lag. with mine i can actually squeal tires if i'm going 5 mph then punch it:) i'm sure someone will chime in with more useful info!

Villan515 10-20-2012 09:58 PM

Posted via FF Mobile sounds like u need an update done I had my updated by ford and it's alot better now stock I can get a 3 gear scratch

dyn085 10-20-2012 10:40 PM

I found that the easiest way to improve throttle response was to install a K&N drop-in filter. Any hesitation that I had immediately disappeared, and I had a couple of friends try it in their Foci when they had similar complaints. You won't have any hp increase, but the throttle becomes much more crisp.

suterp 10-21-2012 02:12 PM

Quote:

Originally Posted by GN Prime (Post 4415043)
with mine i can actually squeal tires if i'm going 5 mph then punch it:)

That would be great. When I punch mine, not much happens.

suterp 10-21-2012 02:19 PM

Quote:

Originally Posted by Villan515 (Post 4415347)
Posted via FF Mobile sounds like u need an update done I had my updated by ford and it's alot better now stock I can get a 3 gear scratch

What do you mean an update? Do they come out with updates every once in a while or did you ask them to take care of a specific issue? Thought mine being brand new would have the latest updates?

suterp 10-21-2012 02:21 PM

Dyn085, thanks for the tip, the K&N drop in sounds worth a try.

dyn085 10-21-2012 02:42 PM

Quote:

Originally Posted by suterp (Post 4416015)
Dyn085, thanks for the tip, the K&N drop in sounds worth a try.

No problem, usually the best deal for it is on Amazon, upper $30's or low $40's[thumb]

Han.MK3 10-23-2012 04:31 PM

Ask them for tsb 12-5-5 (I think it is) helps with throttle lag.


Sent from my PC36100 using FF Mobile

suterp 10-25-2012 11:12 AM

I did some searching and apparently the ecu update in tsb 12-5-5 is for build dates prior to march 2012. Mine was built in april.

I test drove 3 manual foci before I bought and they all seemed to have the slow throttle response. I'm starting to think it's just a case of the drive by wire being programmed for smoothness and fuel efficiency over performance which makes sense given 90% of the target market.

It sucks there is no tuning support to reflash the ECU. You would think with nearly a half million Foci being sold in the first half of '12 there would be enough demand for it.

Still plan to get the k&n drop in tho.


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