I took my "Dinks" mapped 16vt to my local rolling road the other week and had the boost controller setup and D/V removed as it was losing boost.

My mods at the time:

Stock exhaust with decat and backbox
D/V blanked off
Pipercross Induction Kit
Greddy Profec B Spec I set to 1.2 bar
Dinks Remap

Here's the result:

http://www.rev-illusion.com/hayes/pics/diddychart.jpg

I was pretty happy with this, I think now it's running a straight through exhaust to the back box should improve it ever-so-slightly! It's going back Saturday so I'll keep you guys informed!

have you got a afr graph?

Sadly not matey I just had that 1 sent to me via email

That scale doesnt look right, no boost until 5000rpm then goes up to 7500rpm

I forgot to mention the graph isn't totally accurate on the revs side of things as he couldn't find a signal to accurately measure my revs.

Instead it was done on "rolling revs" or so he said but he assures me the power figure, boost and AFR was all fine and correct

That's a pretty poor service really.

He did spend quite some time trying to find a rev signal for it but sadly couldn't find a strong 1

Hmmmm the rev signal is really easy to pick up...

Can you tell me where from and when it gets done again this weekend I'll tell him to put the probe on it.

You'll get a pick up from an injector.

I'll have to see if he can get 1 from there then, cheers m8!

I had a similar experience with this twat in basildon. The guy put my car on their without calibrating the revs properly. The upshop of this is as follows...

BHP is calculated by the dyno machine through the following forumula;

BHP= (Torque*rpm)/5252

If the revs aren't measured accurately then the bhp will be out. If this means that your car is making boost higher up the graph, then it is fair to say that the bhp is wrong.

On mine, it gave me 277bhp @ just under 7,000rpm and carried on until 7,360rpm even though the ECU will trip the limiter at 6,800rpm. My car was making 238lbs/ft at the time, which is weird for the power. Leighton took a look at it for me and explained what had happened. Basically I was only making 254bhp and 238lbs/ft.

ALWAYS make sure they are measuring rpms properly, it seems a lot of them won't do it to give you a big figure and keep you happy

You really want a torque curve and AFR trace, anything else rest is just a bonus

Go to www.tracknroad.com , the guy knows his stuff even if he first comes across as a miserable tosser I think he's had enough of chavs and adopts a nasty attitude with people he hasn't met before. When he gets to know you a bit, he's a top bloke and knows a great deal about tuning cars and dynos in general.

Well it's getting run again Saturday and I'm quite sure the power figure must be correct and I'll have it setup accurately this time!

tracknroad are very good

Having spoken to Bobby (the chap on the dyno) again on Saturday he assures me it is accurate and invites anyone down to Dynotech Hayes Engineering (his firm) to prove it. His website is http://www.hayesdynotech.co.uk if anyone's interested. He's based in Erith too.

He said on this particular dyno (Dyno Dynamics 450DS) the rev signal would only be needed to calculate flywheel torque and we weren't too interested in that anyway. I wanted to see boost pressure, power and AFR which the dyno measured accurately.

I had the car done again on a shootout yesterday and since having my straight through exhaust made up and my gutted cat removed for a straight piece of pipe it seems I've made 5bhp which I am VERY pleased about!

So my final bhp so far - 232.0bhp @ the fly.

Here's a pic of my graph from the day:

http://www.rev-illusion.com/pics/rrnov/graphs/didgraph.jpg

And of course a pic of it on the rollers:

http://www.rev-illusion.com/pics/rrnov/cars/001.jpg

Overall I'm very pleased with the graph and the result for 100k+ mile 16vt with very basic mods!

why is it mph instead of revs?

Why weren't you interested in torque?

I can't understand why if you went with extra information with how to get a feed for revs that they still didn't do it properly?

Also you don't know at what revs you've got peak power at!

Because I was merely checking my AFR on the first dyno run and wanted to see how much power she had.

The shootout days don't do revs, they do speed on the dyno.

Joel it's in mph as it's a shooutout day. It's often put in MPH on shootouts as roller tacho isn't very accurate and it's purely just for power runs.

How much were you for this?

How much was I?

Think Matty is asking how much the RR session cost...

Ah well I designed the chap's website for him so I got it a lot cheaper than anyone else but a full RR mapping/diagnostics session costs around £100 or £50 for 5 power runs.

Yup as Craig said I was just wanting to know rough costs.

Cheers.

I'll get Bob to register to have a chat with you all tommorrow!

Sorry mate i disagree. If you check out the graph again boost is peaking at 5000rpm not STARTING & slowly dropping which is a correct & accurate reading. I believe this car also has a larger turbo which will also take longer to spool up than std.

Hi mate on alot of shootout days are strictly power runs with AFR. Engine tacho in not required for testing Flywheel power on the 2008 Dyno Dynamics 450DS. Ive been to 4or 5 shootout days now & it's all about flywheel power & AFR not torque, boost pressure, inj duty cycle, pulse width or tractive effort etc etc.
A full set up to check theese other figures will take too long when you have 20 cars to do in a shootout day & would be more expensive.

Thats fair enough. I think some people were under the impression that Didcoop had paid for a full RR! I was anyway!

I'm sorry, but i don't think it is an accurate reading. Even if Diddy is running a larger turbo, it should not be spiking between 5000 - 5500rpm, even my monster T34 turbo gave me full boost by 4000rpm and the rev limiter on the 16v engine is shy of 7000rpm, so your rpm is out.

Since Dink hasn't replied on this thread (quite busy at the moment) may I note that his chip wont rev up to 7.5K rpm he usually sticks to 6918rpm.
I suppose if you ask him nicely he may pump it up to 7300 anything more and it's silly on the stock turbo and internals.
So regardless what mr Bob says, the first graph is out.

Since I have the monster T34 that Begbie mentions now on my car, I can also confirm that I get over a bar at around 3.5Krpm so with the normal turbo things should be even better.

Concluding, these graphs look/are wrong.
Don't know why, don't care, they're just not right.

cheers

V.