Problem with friends MY98
#1
Not sure if anyone has any ideas, but my mate went on one of those rolling road things in his MY98 standard UK Impreza. To his horror he only managed to produce 190 bhp . Any ideas why this would be....as least you guys could help put him out of his misey
#2
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First make sure the tank is full of optimax and maybe some octaine booster as well and do an ECU reset (disconnect the bat over night). Should make a difference.
Has it been serviced on a regular basis?
Ian
Terzo 33
Edited cos I can't spoll
[Edited by ian_sadler - 12/12/2001 10:02:15 AM]
Has it been serviced on a regular basis?
Ian
Terzo 33
Edited cos I can't spoll
[Edited by ian_sadler - 12/12/2001 10:02:15 AM]
#3
He assures me that its been serviced, but I'll pass on the info and see how he gets on. I thought it best for him to back to the main dealer and get them to sort it out, but he's a bit strapped at the moment
Cheers
Cheers
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Hi 911,
The reason for the reset is if he has been using ordinary unleaded 95RON. If he has then the engine will wind down the max boost and (IIRC) retard the timing to reduce any detected detting cos of the poorer petrol.
As above a rest & SUL or Optimax & booster will give the engine closer to the 100RON its designed to run on.
The dealer would prob do this first anyway.
Ian
The reason for the reset is if he has been using ordinary unleaded 95RON. If he has then the engine will wind down the max boost and (IIRC) retard the timing to reduce any detected detting cos of the poorer petrol.
As above a rest & SUL or Optimax & booster will give the engine closer to the 100RON its designed to run on.
The dealer would prob do this first anyway.
Ian
#5
Does that mean that as his is a standard UK car, running on 95 Ron, he will never get the advertised 208bhp or whatever?
Should all Imprezas therefore use the higher super-unleaded?
Should all Imprezas therefore use the higher super-unleaded?
#7
Sounds odd.
I have a MY98 and it put down 232 bhp at well lane it is totally standard and was running BP 95RON fuel.
It was quite a cold day though.
Check out the links to the dyno figures most Std cars seem to get in the 220s-230s.
I have a MY98 and it put down 232 bhp at well lane it is totally standard and was running BP 95RON fuel.
It was quite a cold day though.
Check out the links to the dyno figures most Std cars seem to get in the 220s-230s.
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911,
You'll have to get you mate to read all the SIDC FAQ Page but for the mo. here is the bit on fuel type.
http://www.sidc.co.uk/faq.htm#2.4
ian
You'll have to get you mate to read all the SIDC FAQ Page but for the mo. here is the bit on fuel type.
http://www.sidc.co.uk/faq.htm#2.4
ian
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I fail to see why changing fuel would help this guy out, even if he then hits 200+ bhp.
Personally I'd be pissed if my UK spec Impreza only produced 190bhp on 95ron seeing as it's supposed to produce 215bhp.
You might as well tell him to add a bigger turbo cause that will get his figures up too
Personally I'd be pissed if my UK spec Impreza only produced 190bhp on 95ron seeing as it's supposed to produce 215bhp.
You might as well tell him to add a bigger turbo cause that will get his figures up too
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Has it had over boost problems before?
Maybe a restrictor has been put in the pipes around the boost solenoid and it is not the correct size so the car is not boosting correctly.
This happened in my MY98. A new restrictor was put in and it made a BIG difference!
Phil
Maybe a restrictor has been put in the pipes around the boost solenoid and it is not the correct size so the car is not boosting correctly.
This happened in my MY98. A new restrictor was put in and it made a BIG difference!
Phil
#16
911,
If it's at the wheels then that is a lot more than the 208bhp because this figure is the power at the flywheel.
Taking into account transmission losses which will be variable depending upon which method the rolling road use to estimate them, the power at the flywheel could be approaching 245-250bhp which is well above standard.
Andy
If it's at the wheels then that is a lot more than the 208bhp because this figure is the power at the flywheel.
Taking into account transmission losses which will be variable depending upon which method the rolling road use to estimate them, the power at the flywheel could be approaching 245-250bhp which is well above standard.
Andy
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Depending on the rollers, my transmission losses are around 80 -100bhp.
Which rollers did he use?
Have a look at this (Powerstation): http://dyno.scoobynet.co.uk/psuk/andrew_tang.htm
My power at the wheels on the first run was 142bhp and the second was 138bhp. The car only had breathing modifications at the time (full de-cat exhaust and air inductor)
So 140bhp at the wheels, could show between 220-240bhp at the engine.
Which rollers did he use?
Have a look at this (Powerstation): http://dyno.scoobynet.co.uk/psuk/andrew_tang.htm
My power at the wheels on the first run was 142bhp and the second was 138bhp. The car only had breathing modifications at the time (full de-cat exhaust and air inductor)
So 140bhp at the wheels, could show between 220-240bhp at the engine.
#19
Hi Andy,
I'm not sure about the roller set up, I think it was the first time for him, so I don't know how much he knows either
I think it was 136bhp at the wheels but only 192 bhp at the flywheel, so he's still a bit down on power
Not much else I can say on the matter, but I'll pass on all the info. to him. He may not be so after reading this thread.
Cheers guys
I'm not sure about the roller set up, I think it was the first time for him, so I don't know how much he knows either
I think it was 136bhp at the wheels but only 192 bhp at the flywheel, so he's still a bit down on power
Not much else I can say on the matter, but I'll pass on all the info. to him. He may not be so after reading this thread.
Cheers guys
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