850r on dyno

[T5frankie]

I've been comparing it with the results people have had on the forum and they seem quite acurate, so why won't you let me post whp for my car, (I don't mind putting estimated in brackets)

that would mean i could put bhp in the leaderboard then too lol

[claymore]

that would mean i could put bhp in the leaderboard then too lol

The difference is you're bhp figures ar definitely on the optimistic side, I don't have a whp figure only bhp, it's not as if anyone is close to me at the moment anyway.

[stribo]

Ported and flowed cylinder head

The real answer is to get it tuned properly!

That's exactly it, more air in may not lean it off, as the MAF will read the extra air in, and add more fuel to compenasate, ideally the fuel map needs tweaking.

[Jamest5r]

ok so ive lost power through running too rich?? best get that sorted first

Yep lol that's my problem as well, just got to fit the dp and 3" maf then for mapping, can't have you getting too fast can we lol just got to find the money as tax bill month next month and hmrc don't like waiting for their dough

[T5frankie]

The difference is you're bhp figures ar definitely on the optimistic side, I don't have a whp figure only bhp, it's not as if anyone is close to me at the moment anyway.

no i meant with that conversion website from whp

[T5frankie]

Yep lol that's my problem as well, just got to fit the dp and 3" maf then for mapping, can't have you getting too fast can we lol just got to find the money as tax bill month next month and hmrc don't like waiting for their dough

i thought that was getting done this month?

[Jamest5r]

i thought that was getting done this month?

Time/money and other issues

[claymore]

no i meant with that conversion website from whp

i haven't got a problem with that at all, perhaps we should use it as a check when figures seem a little odd

[graemewelch]

Yep lol that's my problem as well, just got to fit the dp and 3" maf then for mapping, can't have you getting too fast can we lol just got to find the money as tax bill month next month and hmrc don't like waiting for their dough

you should notice a good difference with a 3" down pipe. what is the plan with the down pipe.

[T5frankie]

i haven't got a problem with that at all, perhaps we should use it as a check when figures seem a little odd

but if you take oblarks 324bhp and 300whp thats only a 7.5 % drag loss so which one of his results is right?

[S70T5Chris]

but if you take oblarks 324bhp and 300whp thats only a 7.5 % drag loss so which one of his results is right?

The whp figures on that dyno, were the exact opposite to the Maha!

[claymore]

but if you take oblarks 324bhp and 300whp thats only a 7.5 % drag loss so which one of his results is right?

Oblark actually quoted the corrected bhp figures which was wrong, he should have quoted the actual bhp figure

[smithy]

3in maf does lean the car out more air going through the hole at a given point.i think you power figuires are good considering you are running rich but with adjustment and a 3in maf I think you will see 300whp no probs .i bet a hoot to drive in the road though and that is what counts .and no I'm not going into the dyno argue ment again .i will see what happens in the summer when I take my 940 to 4 different type dynos and see what the figuires are then .also I will not touch my car after I have tuned it on hlm rollers and then 3 other dynos too .

[stribo]

3in maf does lean the car out more air going through the hole at a given point.i think you power figuires are good considering you are running rich but with adjustment and a 3in maf I think you will see 300whp no probs .i bet a hoot to drive in the road though and that is what counts .and no I'm not going into the dyno argue ment again .i will see what happens in the summer when I take my 940 to 4 different type dynos and see what the figuires are then .also I will not touch my car after I have tuned it on hlm rollers and then 3 other dynos too .

Assuming it's running in the summer.

[smithy]

Assuming it's running in the summer.

It will be running very soon and my car has stock ecus so cannot be mapped just setup and off I go .standalone next winter though

[oblark]

but if you take oblarks 324bhp and 300whp thats only a 7.5 % drag loss so which one of his results is right?

Oblark actually quoted the corrected bhp figures which was wrong, he should have quoted the actual bhp figure

My figures are as follows

Engine power (measured) 324.3 bhp
Wheel power (measured) 300.4 bhp

The first two sets of figures.

[merc85]

Well done Frankie, top result. what mpg do you get on the road? does it seem like its running rich?

[S70T5Chris]

You have to use the corrected figures for the engine power and torque. There is no such thing as 'measured' flywheel power, its a calculation done by the dyno. The corrected power figure is the final calculation done by the dyno, and that is the valid figure.

You only have a corrected torque figure, and the graph displays the corrected engine power and torque, they are the relevant figures. The whp figure on this dyno are as useless as the ones on a maha, but the oppsoite. We've all been around long enough to know roughly what mods will produce what power, and the fhp figures seems reasonable to me. You can't possibly think that 310bhp (or even 324bhp, which isn't even the valid figure) is 300whp. Judges whp was almost identical to his flywheel power for gods sake!!!!

[S70T5Chris]

Well done Frankie, top result. what mpg do you get on the road? does it seem like its running rich?

That's a good question. Although the answer is only valid if the car was driven semi sensibly. Unfortunately Frankie doesn't do sensibly

Running those afr's you'd expect it to be utterly pants on fuel.

[graemewelch]

Assuming it's running in the summer.

says him whos had a down pipe for months. my toe will grow back thats fitted