Worst Dyno Graph you've ever seen?

[stuart-b]

What is the worst dyno graph you have ever seen?

I bet I can beat it.

This is a beautiful Honda Prelude, that has had a 'BIG TURBO' fitted to it. Normally the car would be ~200 bhp at peak.

Try this on for size.

It seems while the turbo 'spools' the engine loses most of its power, then has a random squirt (presumably before it explodes), it winds right back to the power of a milk float.

Bet this is interesting with FWD?

Quote from advert (I did laugh at this point) Car runs perfectly, boosts great and is an absolute pleasure to drive.

[The Moose]

To be fair, the guy running the dyno could have fked up there...

[wackojacko]

The worst one I've seen was a graph from a Tuscan 2 convertible with some ECU issues !

Thet's just say it looked like the silhoette of a hedgehog....

[stuart-b]

The Moose said:

To be fair, the guy running the dyno could have fked up there...

Fair point, but then why use that to try and sell your car?

[The Moose]

stuart-b said:

The Moose said:

To be fair, the guy running the dyno could have fked up there...

Fair point, but then why use that to try and sell your car?

I would wager the dyno place are charging by the run and the guy selling the car doesn't really know what he's looking at. I'm sure it went something like this

DG - Kin' ell bruv - check dat graph - it is well whack man. Wish mine was like that. Damn fool - peaking at over 321BPH!!!!

Seller - Yeah man - sick blud sick.

And everyone's happy

[Codswallop]

Turbo looks fairly linear. The blip is just when the Vtec kicked in (yo).

[Vixpy1]

We did one years ago, couple of friends bought an S13 to develop knock sensing equipment, so the brief was to er.. make it knock. So we advanced the timing and pulled the pipe off the actuator to get muchos boost, problem was there was a boost cut.

I'll see if i can dig it out

[Vixpy1]

Here it is :

[pimpin gimp]

That's a thing of beauty!

[HairbearTE]

Hate to see dyno plots of HP & TQ that don't cross at 5252!!

[wackojacko]

Vixpy1 said:

Here it is :

[Vixpy1]

HairbearTE said:

Hate to see dyno plots of HP & TQ that don't cross at 5252!!

Me too , its not fking rocket science to make the scales the same!

[stuart-b]

Vixpy1 said:

Here it is :

Wow, how is that even possible... it looks like the engine cuts, or looses power, and then gains again, in a weird spluttering, and then all of a sudden gains power?

Ouch.

[Mercer89]

Vixpy1 said:

Here it is :

My favourite bit has to be that it is labeled up as "datsun shed" !!!

[slinky]

Vixpy1 said:

Here it is :

That is f**king awesome chap, mind if I pinch it for sharing on the book of face?

[Vixpy1]

slinky said:

That is f**king awesome chap, mind if I pinch it for sharing on the book of face?

Feel free

[MX7]

Vixpy1 said:

Here it is :

Weeeeeeeeeeeeeeee......

[Nedz]

[quote=Vixpy1]Here it is :

[/quo

I dont know about dyno graph,spirograph springs to mind with that!!

[Baryonyx]

Probably a lad who I used to go to school with, who posted a dyno for his crappy 1.6 Astra. I can't remember what pathetic readout it gave, but clearly the oversized chav alloys he stuck on it didn't make the flying machine he thought it was. Waste of cash putting a smoker like that on a dyno.

[aeropilot]

Nedz said:

Vixpy1 said:

Here it is :

[/quo

I dont know about dyno graph,spirograph springs to mind with that!!

Was going to post the same thing about Spirograph.