Is the acceleration in my car normal?

First of all i am sorry if this is a really daft question and the following may be very well normal but i would just like to check :slight_smile: plus i must stress that i do not have a wide variety of experience in many cars (this is only the 3rd car i have owned)so maybe i am just finding it wierd because the delivery of the pwoer is different to my previous cars (bmw mini then a 2.5 focus st). Anyway here goes

I have only been driving my exige s pp for about 2 weeks and it now has 700 miles on it so therefore the 1st 600 have been bellow 4k revs and no more than half way on the accerlerator pedal as per running in guidelines so i havnt really had a chance to give it a tiny bit of acceleration over 4k revs. However the guidelines asy that between 600 and 1000 miles that occasional short bursts of acceleration above 4k revs and accelerator pedal to be fully pressed is now allowed.

Now i have only tried it a hand full of times to give it a short burt of acceleration up to or near the redline.However there seems to be a rather large, very noticable delay in the car gathering pace when putting my foot down.

For example i find that when at like 2.5 - 3.5 k revs, in 2nd gear and i pin down the accerlator (and even when i gradually push the accelerator to the floor) then the car doesnt seem to accelerate very much at all for a second or two then it gets to like 5k revs and above i suddenly get pushed right back into the seat all the way up to 8k revs and i can hear the supercharger (i can hear the supercharger from like 4.5k revs).

My question is that is this normal? is it something to do with the car having not too much torque or maybe just a not so good low torque range? At what revs should i be able to hear the supercharger when accelerating fairly hard?

Thanks in advance. Dicko

I would suggest running it in first and see how it is then. There is less torque at 2.5k than 5k but two seconds delay sounds wrong. As I say run it in then see how you go.

Fly by wire throttle might be different to what you’ve experienced in the past?

Although I’m guessing most modern car have this now.

Yep mini is definitely FBW not sure about Ford but I would have thought so :wink:
2 second delay sounds a bit odd though, I would agree with Boothy get it run then see how it is after the 1k service and with some fresh fully synthetic oil :slight_smile:

Sounds like the cam changover over, which is normal. On the S, the cam chanover point is torque sensitive, unlike the NA.

Not sure if it’s just me but my 2006 Exige felt quicker between 1k and 4k rpm. Then again my 2010 model feels a lot, lot stronger from 5k onwards (on 2nd cam). I reckon that once your car is fully run in and you start to give the beans regularly you’ll realise that these things don’t shift until up nearer the red line.

Lol, my landcruiser feels quicker in the lower revs.

Thanks everyone :slight_smile:. It very well could be that its just not what im used too. i will wait till after the run in service and see how it feels then. Should i mention it to them when i take it into the service or just wait till afterwards if there is still a problem?

Another quick question, i heard a lot being said about the oil change after run in but does the dealer change this at the run in service or myself? if i have to do it by myself then which oil should i use? thanks again

No dealer will change at 1k service :wink:

oh good.cheers mate

I think, the cam changover is 4.5k on the S under full throttle, but can be a bit higher if full throttle is not given. If your short shifting around 6k, I can imagine the 1 second pause and surge of the cam change is quite annoying - Realistically when flat out you would change at around 8k keeping the car well within the 2nd cam change point.

There shouldn’t be any pause but I would wait until the car is fully run in before you worry.

Also be careful using too much performance before the 1000 mile service. Yes you need to run in the higher cam, but the dealer will plug the car into a diagnostics port and check to see if the car has been used a lot in the higher rev ranges. If any problems develop, they can invalidate your warranty.

I ran my car in by increasing the throttle and revs every 100 miles or so. So for example, at 600 miles, I was using 4000rpm, 650 miles was 4500rpm, 700 miles 5000rpm, 750 miles, 5500rpm, 800 miles 6000rpm, 850 miles 6500rpm, 900 miles 7000rpm, 950 miles 7500rpm.

I’d also do short (and I mean short) bursts up to a couple of shift lights and then change gear.

My car is healthy from following this proceduce and produced good power on a dyno day earlier in the year :slight_smile:

Just to add also, cam change over is 4500rpm if you’re on full throttle and about 6000 if you’re not.

I get a noticible kick when mine hits the second cam and you can hear the engine note change as well. However there is no delay, it’s just instant!

You may just need to get more used to the car as well. Once run in you can use the full rev range and you’ll see that it’s not a car that’s like others. Put it this way, when my wife drives my car she changes gear between 5000-6000rpm because she says that “it’s not good for the engine to rev it hard”. That’s because she’s used to a little Fiesta.

Normal road cars don’t rev like this and once you get used to using ALL of the revs, you’ll find it a little rocket ship. Having said that, it is quick even on the first cam, and there should be no delays or lag.

I’d still recommend waiting for your first service and then seeing what it’s like after that.

Maybe the car is set up electronically pre-service to not allow full power until the aftersales service is carried out?

thanks again for your comments guys. As it has been said it is probably that the car is just has a different acceleration proceedure to other cars i have driven i just need to get used to it. I will find out properly about any delay once its run in and i can have many goes at it :slight_smile:

yeah i have only gone over 4 k revs and anywhere near the redline like 5 or 6 times (most of them been to 6-7k) including only twice i have seen the shift lights appear. C8UER, when you said you run it in like you did, ie at 700 miles you did 5k revs, do you mean you did a short burst to 5 k revs or ran for a bit at 5 k revs?

[quote=C8UER]There shouldn’t be any pause but I would wait until the car is fully run in before you worry.

Also be careful using too much performance before the 1000 mile service. Yes you need to run in the higher cam, but the dealer will plug the car into a diagnostics port and check to see if the car has been used a lot in the higher rev ranges. If any problems develop, they can invalidate your warranty.

I ran my car in by increasing the throttle and revs every 100 miles or so. So for example, at 600 miles, I was using 4000rpm, 650 miles was 4500rpm, 700 miles 5000rpm, 750 miles, 5500rpm, 800 miles 6000rpm, 850 miles 6500rpm, 900 miles 7000rpm, 950 miles 7500rpm.

I’d also do short (and I mean short) bursts up to a couple of shift lights and then change gear.

My car is healthy from following this proceduce and produced good power on a dyno day earlier in the year :slight_smile: [/quote]

Maybe a ‘pause’ is not the best way to describe it, but the power does dip slightly with the cam change at around 4.5k. However, if your driving ast a steady 4.5-6k revs and then put the the accelerator flat down, there will be a slight hesitance in the S while the car changes to the 2nd cam.

Dicko - I was taking it up to 5000rpm and holding it there for 2-4 seconds. Slowly working up to the desired revs and holding it for a bit on half throttle and a few times on full throttle for short bursts. Mix it up a bit :slight_smile:

[quote=dicko_4]thanks again for your comments guys. As it has been said it is probably that the car is just has a different acceleration proceedure to other cars i have driven i just need to get used to it. I will find out properly about any delay once its run in and i can have many goes at it :slight_smile:

yeah i have only gone over 4 k revs and anywhere near the redline like 5 or 6 times (most of them been to 6-7k) including only twice i have seen the shift lights appear. C8UER, when you said you run it in like you did, ie at 700 miles you did 5k revs, do you mean you did a short burst to 5 k revs or ran for a bit at 5 k revs? [/quote]

I think you are noticing the difference between a low revving engine with a slug of low down torque ( Your focus sT) And the high revving exile that doesn’t get into it’s stride till 4.5 k revs…

Your not going to get any pull below 3.5k rpm due to the lack of torque. The stock Exige S maps and torque ranges can be vastly improved by having the ECU remapped. Throttle response on the later cars (FBW - 56 year onwards) are a bit pants compared to the FBC cars and many people have noted the delay.

Power delivery on supercharged toyota’s is deceptively fast and smooth because it pulls hard to the limiter with no sudden jerk or jump.