OcUK Rolling Road Day 20 @ Ti Motorsport (Stoke) - Saturday 29th October 2016

Think this sums up the cooling on the dyno pretty well. I have never seen Coolant temperature or Manifold Temperature rise like this on the road, and I ran with the bonnet up.
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Edit: Same boost etc but a third gear pull but on the road (Can't really do 4th given the speeds it would involve

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It is a shame they couldn't run the 535d - I can't find anything online about how to get them to behave on a dyno but we tried everything we could think of. A bit crap that they offered to run my car again FOC if I found out how to get it to run properly rather than giving me a refund too, but there we go.

They took far too long strapping stuff down and the airflow in the room was just too poor IMO. At the Surrey Rolling Road place the airflow was much better and Powerstation was also better. Also, I don't know what they did or didn't do but the traction issues were the worst I've seen at a dyno day - it used to only be the big big power stuff that had issues but even 200hp stuff was struggling...
 
How's it going guys, not been able to get on the forum until now.

Good fun day, great to meet most of you and some quality motors and both surprising and interesting results! I had to shoot as soon as I saw the whipped mustang have a run as I was massively late as it was :D

I'll post my graph below (not sure if uploaded by Frozennova). I ran with the engine light on, due to it having a cheap aftermarket cat fitted, I didn't think it really made any difference so didn't clear the code, however I've been messing about the last two days and the car is far smoother to drive once it's cleared, yet doesn't necessarily feel any more powerful at the top... so maybe I need to bin the cheap cat!

typergraph.jpg

None the less my car made what I thought was rubbish results haha, on the road it is a totally different story. I mean it ran 123lbft torque well into vtec? Odd. I don't really fully understand these graphs but the max power was at pretty much the rev limiter and the max torque not far off either! Usually it's bang on the 6000 (not 6200RPM as the graph suggests) crossover point.

Odd results here and there, some powerful stuff not hitting as intended and the issues with heat and traction but once they perfect their usage of it, it would be a good venue

Mines in there on Thursday for a chain replacement, I aren't sure if there is a bedding in period but if they reckon not, then perhaps a cheeky request for a free run with a new chain and the engine code cleared is in order :)
 
Stormster, a PDF copy of your graph is in the link.

Looking at your printout, particularly the AFR trace it looks to me like the aftermarket cat and combined CEL are causing the car to revert to a very rich limp home map.

After 6000RPM that's running in the region of 11:1 AFR, most tuned turbo motors don't run that rich and they need to rich for the extra cooling, Honda motors particularly tend to like running quite lean and it's quite universal that best power is around 12.5-13:1.

I'd say replace the cat with something of good quality and power will be back to where it should be. Granted I'm no expert but I'd like to believe I have a fairly sound knowledge on these sort of things
 
Thanks bud, it was quite clear you knew your stuff when you were talking to shoes the other day :)

I had a browse on Euro Car Parts and they list a Klarius branded cat (they're a local company in Staffs to be fair) but not sure if they're any good or more importantly better than what's on there. The code is p0420 and is usually the cat itself at fault rather than lambda sensors etc it seems, in the Civic world.

I can sometimes go a couple of days until the check light is back on and a decent amount of miles, but I think more so in the colder temps there seems to be a bigger difference with it off rather than on for how smooth the car drives at lower RPM.

None the less I'd be intrigued to see what it would run on the rollers with the light off. My bad :D I still don't buy 123lbft though, I know they're not a very torquey motor but still!
 
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I am gonna pickup the BMW today/tomorrow I might ask about re-running it with bonnet up, but as it feels so savage on the road I probably will not bother. Just seems like some other cars the M3 is very sensitive to heat, whereas the Mustangs really did not seem to care, I was to be blunt a little impressed with my 472BHP, I was expecting in the region of 455-460BHP maximum and the completely stock car made great numbers as well with 415BHP, though its torque figure was considerably down on stock, but the owner did admit to only running the car on cheap super market fuel probably means the car was running 21-22 degrees timing WOT, whereas on good fuel the ECU will advance to 23-24 degrees which helps with torque for sure in mid-range.
 
Gibbo said:
I am gonna pickup the BMW today/tomorrow I might ask about re-running it with bonnet up, but as it feels so savage on the road I probably will not bother. Just seems like some other cars the M3 is very sensitive to heat, whereas the Mustangs really did not seem to care, I was to be blunt a little impressed with my 472BHP, I was expecting in the region of 455-460BHP maximum and the completely stock car made great numbers as well with 415BHP, though its torque figure was considerably down on stock, but the owner did admit to only running the car on cheap super market fuel probably means the car was running 21-22 degrees timing WOT, whereas on good fuel the ECU will advance to 23-24 degrees which helps with torque for sure in mid-range.
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I'd rerun if I were you, just to compare!

I was planning to send them some feedback on the day. Maybe it's a bit less patronising if you talk to them about their cooling etc. face to face?
 
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