MX5 Turbo - Hesitation on Boost
Discussion
Hi,
Just wondering if anyone can provide any advice on the following. Recently I've been noticing some hesitation when the car comes onto boost and this is apparent right through the rev range. Just this week I took the car into a local specialist and they first had a look at the plugs and advised they were fouled up slightly and thought the car was possibly running rich. In doing so the spark itself wasn't therefore adequate which in turn would cause the hesitation. Having spoke to them today they have advised that the Greddy e-manage Blue the car is setup with doesn't support the Innovate Wideband O2 sensor and since disconnecting it the problem has almost fully gone bar at the very top of the rpm range.
I'm wondering can the car run on the map it has constantly without a wideband o2 sensor and given the sensor has now been disconnected, will the car continue to run rich and foul up spark plugs? The map the car has seems good in the sense of the torque curve seems healthy and the power output is good. I'm thinking the Wideband was possibly added later on or that the Greddy e-manage blue does support it and it's crapped out?
Just wondering if anyone can provide any advice on the following. Recently I've been noticing some hesitation when the car comes onto boost and this is apparent right through the rev range. Just this week I took the car into a local specialist and they first had a look at the plugs and advised they were fouled up slightly and thought the car was possibly running rich. In doing so the spark itself wasn't therefore adequate which in turn would cause the hesitation. Having spoke to them today they have advised that the Greddy e-manage Blue the car is setup with doesn't support the Innovate Wideband O2 sensor and since disconnecting it the problem has almost fully gone bar at the very top of the rpm range.
I'm wondering can the car run on the map it has constantly without a wideband o2 sensor and given the sensor has now been disconnected, will the car continue to run rich and foul up spark plugs? The map the car has seems good in the sense of the torque curve seems healthy and the power output is good. I'm thinking the Wideband was possibly added later on or that the Greddy e-manage blue does support it and it's crapped out?
stevieturbo said:
I suggest you find a tuner who is competent.
Because that explanation makes no sense.
" they have advised that the Greddy e-manage Blue the car is setup with doesn't support the Innovate Wideband O2 sensor and since disconnecting it the problem has almost fully gone bar at the very top of the rpm range."
Can you explain this better ?
You seem to be suggesting a new problem, so clearly whatever way it was set up worked fine before, but doesnt now. Or have you added the Innovate somehow prior to the problem ?
Disconnected how ? Is it even wired into the Greddy and is the Greddy actually using it ? Have they tested the wideband to see if it is working ?
It sounds like this shop has little ability and havent actually tested anything ? and are just making wild guesses/assumptions ?
They have advised it doesn't support it and in not supporting it the wideband sensor has become faulty. This I don't quite understand? I'm lead to believe they can become faulty with overfueling issues amongst lots of other things but not that - perhaps he explained it poorly. It didn't work fine before as there was hesitation on boost and this is the reason they have given.Because that explanation makes no sense.
" they have advised that the Greddy e-manage Blue the car is setup with doesn't support the Innovate Wideband O2 sensor and since disconnecting it the problem has almost fully gone bar at the very top of the rpm range."
Can you explain this better ?
You seem to be suggesting a new problem, so clearly whatever way it was set up worked fine before, but doesnt now. Or have you added the Innovate somehow prior to the problem ?
Disconnected how ? Is it even wired into the Greddy and is the Greddy actually using it ? Have they tested the wideband to see if it is working ?
It sounds like this shop has little ability and havent actually tested anything ? and are just making wild guesses/assumptions ?
They also stated the map is setup for drifting hence why towards the top of the rpm range it overfuels.
Thanks for the advice. I spoke to another of the guys who seemed far more knowledgeable today. He advised the wideband sensor was installed incorrectly due to the way it was wired up. Healso advis its faulty. He stated the car now pulls smoothly and the only issue is the car running slightly rich which will lessen the economy (not fussed) and shorten the life of the spark plugs so these are being replaced due to being so cheap so I can get an idea on how quickly they foul up.
He thinks the o2 sensor was added at a later date to the turbo install and that it won't make any difference due to the car having a map that was done with an aux o2 wideband.
He thinks the o2 sensor was added at a later date to the turbo install and that it won't make any difference due to the car having a map that was done with an aux o2 wideband.
Sorry for the bump but this problem still isn't fixed, it's simply better than it was. This was due to an injector leak which is now fixed - all seals on the injectors replaced and they have been flow benched and cleaned.
Any other ideas?
Factually i know it can't be the injectors, fuel filter, spark plugs, air filter, am very doubtful it's the leads, fuel pump, coil pack and I don't think it's the mapping, turbo or boost leaks? At a loss with it.
Any other ideas?
Factually i know it can't be the injectors, fuel filter, spark plugs, air filter, am very doubtful it's the leads, fuel pump, coil pack and I don't think it's the mapping, turbo or boost leaks? At a loss with it.
Edited by Buzzkill on Thursday 1st August 19:01
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