My 06 Exige S has a hesitation when you plant the throttle… It holds back for a couple of seconds before it takes off. A bit like too much fuel. It will happen at low revs, or when you hold it at high revs and plant the throttle.
It’s being sorted under warranty but i’d like to know what it is.
I heard them mention the blower seals, but it feels more to me like a MAP sensor or DBW issue. Blower seals would be more of an issue at higher boost so the fact it happens at low RPM too (therefore low boost) suggests it’s not that.
Anyone else had similar?
I’m quite clued up on engine management but not familiar enough with the Exige to know yet.
does your car have air-con? might be related to a known issue with the air-con pump, that usually causes the car to stall but can also cause hesitation
I keep getting something similar, I am on my third flash and second ecu, this latest one seems to suffer from intermittant lag, usually when its been running for about an hour or so this never happened on any of the others…
Exigeboy - yep it has A/C but the problem occurs with it on or off. I think I know of the problem you mean as i’ve seen it on other cars when the A/C pulley or pump siezes and puts a load on the idler belt.
Car never shows sign of stalling so maybe it’s not that?
My 07 N/A does hesitate and jerk a bit when I set off from cold and up a hill. It is OK after a few hundred yards, and I am not too fussed, as I dont think you should be planting the throttle hard when setting off from cold with any engine.
I know the type of hesitation you mean, but what I have isn’t when pulling away, it’s when you are trying to build up boost, it feels like you have the brakes on - then it takes off.
Could be the o2 sensors either side of the cat, they can become slow to react to mixture changes, hence the fueling issues and the hesitation. They about 50 quid each tho.
You could probably change them yourself if you get the under tray off.
Ok supercharger seals have been replaced and it’s a bit better but i’m not convinced it’s fully right.
If you are going through the gears it really flies and no issues.
If you are doing 4000 rpm in any gear, then floor it, there is quite a delay before it starts to build in boost. It’s like extreme turbo lag, and not how a Supercharger should behave - ie pretty much instant boost.
Has anyone else had this?
I’m going to try an 08 one whoch they have in, in a few weeks but i’d like to know if anyone else is experianceing lag?
I have the same spec/year car as you…although I have a Pipercross VIS on it…at 4000rpm if I floor it the drive is immediate. No hesitation.
The only “issues” with the fuelling is that when the car is started from cold it goes to 3K for a couple of seconds before settling down and also when warm if you lightly blip the throttle from idle there is some searching before returning to idle.
Be very carefull with after market intakes on the S, adding one will most likely cause you to run lean, the main issue is the placement of the MAF sensor, most of the intakes use a larger diameter tube where it fits, this in turn means the sensor miss reads the amount of air passing too low which means it will run lean, the besy mod appears to be to remove the snorkel that comes from the airbox and fit a green cotton filter.
I have only fitted the panel filter as I didn’t want the extra induction noise, removing the snorkel is a simple job and might give you the induction noise you want.
I have a good bit of experience on EVO’s and STi’s with some of the induction filters causing hte MAP to under read. I only fitted one to the Evo to break the 400 bhp mark, as I am not a fan of induction kits tbh.
I was really looking for a touch more noise, so the Green is a good idea.
Only issue I have had with Green panel filters is that they used to oil them heavily, and that can coat itself on the MAF element, and cuase similar issues. Maybe they have sorted that now?
Any ideas’s where I can order one?
So it is a MAF and not MAP on the Exige?
I still have a feeling this problem I have is DBW or MAF…
MAF is the way our cars read, the Green filter I got was not heavily oiled and I got it from the local Max power style shop, they had it listed
I had very similar running issues with my Golf R32 bad hesistation etc. VW could not fault the car, a local specialist replaced the MAF and the car was back to its rude health after, I never let the monkeys at the VW dealer near my car again, their answer was always “if it don’t show on the computer it ain’t broken” muppets…
Guys I have the same engine on my MR-S and only use APEXi dry air filters. This avoids having oil bypassing the filter and going on the maf sensor.
It is also important for you with the standard ECU without a tailored reflash to use induction kits which retain the vanes inside the stock maf tube to get a clean stream of air passing through the maf for a correct and stable reading.
Idle get a bit funny if you dont use the vanes and have no means to tune the ECU.
It was a sticking dump valve / relief valve on the supercharger.
Goes like a train now A fast train.
Westover were exceptionally good at sorting it. To be fair I asked for the car even with the fault, because I had a trackday at Rockingham and wanted to use the car. They would normally have fixed it before letting me have it. Picked it up for me while I was away from home too