[Jaw_F430]

Been to dyno dynamics today in Leeds and my results are shown on the graphs.

Current mods:

JCW exhaust
JCW air intake
GP I/C
JCW 380cc injectors
Cooler plugs
JCW remap
15% pulley and shorter belt

Any comments welcome

Regards

James

[1320autos]

Bonnet open or shut and what was there fan like?

[Loui]

Hummm id have expected much more at the wheels myself????

[Jaw_F430]

Quote: Originally Posted by 1320autos (original)

Bonnet open or shut and what was there fan like?

Bonnet was open for first few runs and was making 195BHP, shut the bonnet and made 203BHP. Intake temp was 27

I thought their fan was very good, but I havent been to any other dyno. I have got sum pics so will post them it I can

[Jaw_F430]

Paul you can see the fan on the attached pic

[GTT 280]

fan looks good to me. never been to a RR but seen loads on youtube

[ScottyBoy]

Good results, well like loui said maybe could have expected slightly more at the wheels.

Can you post the details of the garage? Number and postcode would be nice.

Scott

[sam_a156]

Quote: Originally Posted by 1320autos (original)

Bonnet open or shut and what was there fan like?

What kind of diffs have you seen open vs. closed? The fan at my local site is not really suitable for MINIs - it is blowing air from floor level whereas the car is lifted on the dyno. Perhaps opening the bonnet would help...

[1320autos]

When you say the intake temp was 27 deg, was that with a Scanguage 2? If so how many parameters were you monitoring?

At a guess I would say that where the power is trailing off is because of the JW map being so rich / high intake temps / timing being retarded / slipping belt.

I would do a compression / leakdown check just to make sure everything is a ok..

What was your 1/4 mile time ET and weight?

[1320autos]

Quote: Originally Posted by sam_a156 (original)

What kind of diffs have you seen open vs. closed? The fan at my local site is not really suitable for MINIs - it is blowing air from floor level whereas the car is lifted on the dyno. Perhaps opening the bonnet would help...

We have so many pulls done on the car I cant honestly remember, but if you consider that when all the air is going through the intercooler thus giving the car a lower IAT the ecu will respond by giving the engine more timing and and thus more power.

Also when runs are done in 3rd gear even our software struggles to collect data quick enough.

We must rember that JawF430 car hasn't an ex manifold fitted, this will help him out no end in the horsepower stakes.

[Jaw_F430]

Quote: Originally Posted by 1320autos (original)

When you say the intake temp was 27 deg, was that with a Scanguage 2? If so how many parameters were you monitoring?

At a guess I would say that where the power is trailing off is because of the JW map being so rich / high intake temps / timing being retarded / slipping belt.

I would do a compression / leakdown check just to make sure everything is a ok..

What was your 1/4 mile time ET and weight?

I don't have a scangauge the inlet temp was on my dyno print out sheet. Ambient temp was 18. The A/F hit a low at about 10.7 but was around 11.5 average. The pulley belt is due for change as I fitted it around 10000-11000 miles ago.

1/4 mile time into very stong head wind was 14.9@94-95mph weight with me in was 2846lbs (half tank of fuel)

I was expecting around 215-225bhp but I didnt dyno the car before I fitted any mods so can't be sure how much gain I actually have

Some runs were done in 3rd but the best run of 203bhp was done in 4th even tho the sheet still says 3rd

Regards

James

[Jaw_F430]

Quote: Originally Posted by ScottyBoy (original)

Good results, well like loui said maybe could have expected slightly more at the wheels.

Can you post the details of the garage? Number and postcode would be nice.

Scott

Scott

The details of the garage are:

RS Tuning Ltd
Unit 8 Castleton Close
Armley
Leeds
LS12 2DS


Regards

James

[MINI-Morgan]

Dodgy T-Map sensor like mine was? Looks like it starts to tail off at 180hp when you would expect it to be pulling harder.

[Jaw_F430]

Quote: Originally Posted by MINI-Morgan (original)

Dodgy T-Map sensor like mine was? Looks like it starts to tail off at 180hp when you would expect it to be pulling harder.

How did you test to see if yours was faulty, or did you just buy a new one and fit it and felt the differance?

Regards

James

[minigolf]

Quote: Originally Posted by Loui (original)

Hummm id have expected much more at the wheels myself????

Same.

I'd also like to know their equation for working out the flywheel power figure?

My April 04 build MCS dynoed at 106kW in stock trim and then on the same dyno after fitting ALTA CAI, Milltek cat-back, MTH Tuner file and ALTA 15% v1 pulley returned 136kW.

In whp, it went from 142 stock -> 182 modded.

As you say though, not having a baseline run from the same dyno makes any subsequent results guesswork. Haha, dyno results still leave you with guesswork at the best of times.

For example, our Mk5 GTI has been on the dyno in stock trim twice. First result was 149kW at the wheels (200whp) and second result, on a different dyno, was 140kW (188whp). Not a bad drivetrain loss from a car rated at 147kW at the flywheel from factory. It would appear Volkswagen have clearly underquoted their figures. Or at least, it would if other stock GTIs weren't returning results around the 125-130kW mark.

Ultimately, in most cases, if your car drives great and you're happy with the performance, a dyno result really only proves how much you can (or can't) brag to your mates.



Cheers Liam

[BigShow300]

203bhp is bang on the money using the 1/4 mile time and weight of the car, but I'd be expecting 210-215 bhp at the fly with those mods. As Paul said a leakdown test looks like the best bet as I know from experience that a leaky head can rob you of 10-12bhp easy.

With the addition of a better manifold and good leak down results you should be at the 225bhp mark.

[Jaw_F430]

Quote: Originally Posted by BigShow (original)

203bhp is bang on the money using the 1/4 mile time and weight of the car, but I'd be expecting 210-215 bhp at the fly with those mods. As Paul said a leakdown test looks like the best bet as I know from experience that a leaky head can rob you of 10-12bhp easy.

With the addition of a better manifold and good leak down results you should be at the 225bhp mark.

Yes I used the calculator to work out my bhp and it was bang on, but my 1/4 mile run was done into a very strong head wind so on a calm day I would run a quicker time therefore using the calculator again my bhp would come out more.

I was expecting my bhp to be closer to 215-225 as Loui's car ran a 14.7 1/4 mile on the same day as I did my 14.9 and his car is 203whp and about 241bhp, so I didn't think my car would be as much as 38bhp down for 0.2 of a second as the his car weight isn't much heavier than mine.

I think I need a leakdown test doing

Regards

James

[MINI-Morgan]

Quote: Originally Posted by Jaw_F430 (original)

How did you test to see if yours was faulty, or did you just buy a new one and fit it and felt the differance?

Regards

James

Needs to have the sensor monitored really and I know cause it was registering stupidly high temps on a rolling road (Thanks Paul for spotting). And then testing out on the road it still would be consistantly upto 60+degrees C so the ECU would pull the time and dump more fuel to compensate. All sorted now though

[Jaw_F430]

Quote: Originally Posted by MINI-Morgan (original)

Needs to have the sensor monitored really and I know cause it was registering stupidly high temps on a rolling road (Thanks Paul for spotting). And then testing out on the road it still would be consistantly upto 60+degrees C so the ECU would pull the time and dump more fuel to compensate. All sorted now though

Did you see really bad mpg when you had your faulty T-map sensor? my average is always 21ish mpg ( motorway and some stop and starting)



Regards


James