Down on power

[Designerman]

After the rolling road session last Saturday I was a bit disappointed to discover my car was only making 291bhp with 300lb ft. torque.

Two other standard cars both made it into the 320's.

Anyone have any ideas as to why, or any suggestions of an easy fix would be appreciated.

[Scutch]

There are some mappers who will check the car over to see why they arent making the standard figures. It costs a small portion of what an actual map would cost, but would give you a great indication of where and why things are going wrong.

[dynamix]

What fuel do you run it on ?

[danr55]

have you tried resetting the ECU? If the car is at Tileys today ask them to do it, that COULD be a very quick easy fix, definitely worth a try.

[ScoobyDan]

Wouldn't worry about it, Rolling roads can be a lottery
My car only made 308bhp and less torque than yours whereas it has pulled over 330 in the past. Car feels really good at the moment so I am not going to let it bother me.

[WR1 Bro]

Car feels really good at the moment so I am not going to let it bother me.

I'll be quoting this to you in the very near future

[ScoobyDan]

It feels good for a virtually standard car but it would feel better with more power

[SPIKE LIKE MIKE]

Wouldn't worry about it, Rolling roads can be a lottery
My car only made 308bhp and less torque than yours whereas it has pulled over 330 in the past. Car feels really good at the moment so I am not going to let it bother me.

I checked my previous graphs from my mapper done a week previously....I was dubious as tuners usually give you the best printout and de-tune slightly for safety....but.............

Within 0.5bhp both on the Dyno Dynamics rollers

[Designerman]

What fuel do you run it on ?

I guessed someone was going to ask that question, but I have always used V Power apart from the rare occasion of having to resort to Ultimate.

[Designerman]

have you tried resetting the ECU? If the car is at Tileys today ask them to do it, that COULD be a very quick easy fix, definitely worth a try.

Had thought of trying this Dan. Read your post too late for me to get Tiley's to do it today.

Have heard of a quick way to do it. Not sure if this is right though.
Disconnect the battery, turn on the ignition and hold the brake pedal down. Comments anyone.

BTW I had to fork out for a new near side front suspension strut..

[dynamix]

That doesnt work on the newage Denso ecu afaik.

[Designerman]

That doesnt work on the newage Denso ecu afaik.

Thanks Duncan.

I did a bit of searching last night and found a lot of interesting stuff on Scoobypedia about resetting ECU's. As you say newage ECU's can only be reset electronically, but it all got a bit too technical for me..

[WR1 Bro]

That doesnt work on the newage Denso ecu afaik.

Thanks Duncan.

I did a bit of searching last night and found a lot of interesting stuff on Scoobypedia about resetting ECU's. As you say newage ECU's can only be reset electronically, but it all got a bit too technical for me..

It is a 10 min job at a dealership.

[Azyman]

After the rolling road session last Saturday I was a bit disappointed to discover my car was only making 291bhp with 300lb ft. torque.

Two other standard cars both made it into the 320's.

Anyone have any ideas as to why, or any suggestions of an easy fix would be appreciated.

hi mine made 320 i was expecting 330 as last time my reading was 330

but since then my main dealer had to replace the bottom end not sure if the ecu was reset after the rebuild

so was mine down or was it hi reading last time and i am on tesco fuel

[SPIKE LIKE MIKE]

After the rolling road session last Saturday I was a bit disappointed to discover my car was only making 291bhp with 300lb ft. torque.

Two other standard cars both made it into the 320's.

Anyone have any ideas as to why, or any suggestions of an easy fix would be appreciated.

hi mine made 320 i was expecting 330 as last time my reading was 330

but since then my main dealer had to replace the bottom end not sure if the ecu was reset after the rebuild

so was mine down or was it hi reading last time and i am on tesco fuel

The debate rages on.....

Maybe your engine was "too loose" before hence the 330 and the bang??

[Azyman]

yer could be or just women drivers

i still play on the guilty trip glad i wasnt driving it at the time

[SPIKE LIKE MIKE]

yer could be or just women drivers

i still play on the guilty trip glad i wasnt driving it at the time

Class....I never realised Mrs Geoff was driving at the time

Hope you gave her a right bollocking!!

[marky mark]

After the rolling road session last Saturday I was a bit disappointed to discover my car was only making 291bhp with 300lb ft. torque.

Two other standard cars both made it into the 320's.

Anyone have any ideas as to why, or any suggestions of an easy fix would be appreciated.

hi mine made 320 i was expecting 330 as last time my reading was 330

but since then my main dealer had to replace the bottom end not sure if the ecu was reset after the rebuild

so was mine down or was it hi reading last time and i am on tesco fuel

10 BHP is neither here or there on a dyno. I would not worry. A new / tight engine can sap a bit of BHP though.

[dynamix]

Next time, just inflate your tyres to 45psi and you will easily make an additional 10 bhp on a DD dyno.

[marky mark]

Next time, just inflate your tyres to 45psi and you will easily make an additional 10 bhp on a DD dyno.

Too true....echo that.

[Azyman]

note to myself bring rubber rings to next rr day

[WR1 Bro]

Next time, just inflate your tyres to 45psi and you will easily make an additional 10 bhp on a DD dyno.

PASTY?????

[marky mark]

Pasty is definetly the kind of BHP chaser that would pump his tyres up before going on a dyno - i could not agree more!

[WR1 Bro]

DSA were inflating all tyres I think... Not sure what pressures they were using.

Joking aside, DSA ran a great rolling road day that everyone seemed to enjoy.

[marky mark]

They would not have been inflating, but would have been checking. Some may have required a bit in, some a bit taken out. A decent dyno set up (as DSA is) should do this as a matter of course.

[danr55]

I was interested to see them doing this, and checking oil levels in every car before they ran. WRC tech didnt do either of these things.

[marky mark]

I was interested to see them doing this, and checking oil levels in every car before they ran. WRC tech didnt do either of these things.

WRC tech were a cowboy outfit....end of story. The more cars they could get onto the dyno in a day, more opportunities they had to trot out any one of the following.

a) it's lean, it needs mapping
b) it's rich, it needs mapping
c) That exhaust is restricting it, it needs a 3.5" APS drainpipe.
d) The turbo is not performing, it needs a APS SR40
e) The intercooler needs changing for an uprated APS topmount.
f) Induction kit is rubbish, it needs a APS CAIK.

Hence they would not have the time to check tyres and oil.

[jd]

[WR1 Bro]

I was interested to see them doing this, and checking oil levels in every car before they ran. WRC tech didnt do either of these things.

WRC tech were a cowboy outfit....end of story. The more cars they could get onto the dyno in a day, more opportunities they had to trot out any one of the following.

a) it's lean, it needs mapping
b) it's rich, it needs mapping
c) That exhaust is restricting it, it needs a 3.5" APS drainpipe.
d) The turbo is not performing, it needs a APS SR40
e) The intercooler needs changing for an uprated APS topmount.
f) Induction kit is rubbish, it needs a APS CAIK.

Hence they would not have the time to check tyres and oil.

In fairness to WRC, when I went to a rolling road they were checking water, oil and tyre pressures.

[SPIKE LIKE MIKE]

I was interested to see them doing this, and checking oil levels in every car before they ran. WRC tech didnt do either of these things.

WRC tech were a cowboy outfit....end of story. The more cars they could get onto the dyno in a day, more opportunities they had to trot out any one of the following.

a) it's lean, it needs mapping
b) it's rich, it needs mapping
c) That exhaust is restricting it, it needs a 3.5" APS drainpipe.
d) The turbo is not performing, it needs a APS SR40
e) The intercooler needs changing for an uprated APS topmount.
f) Induction kit is rubbish, it needs a APS CAIK.

Hence they would not have the time to check tyres and oil.

In fairness to WRC, when I went to a rolling road they were checking water, oil and tyre pressures.

Echo that, and from memory a few needed topping up with oil!!