Engine finally ready for Dyno test

[sundance002]

Max_Torque said:

I think the important thing to remember is that an engine control calibration is like a pyramid. The most important part is the base. It's very easy to get all excited about things such as launch control or antilag and the like, and to neglect to do the run-of-the-mill things properly (such as calibrating dwell time for instance). In all honesty i see very very few aftermarket systems where the base cal has been done (and validated) to a sufficient robust level to allow the higher level strategies to work, and work repeatably. Hence, owners are often left with "niggles" and "issues" for a long time after the original work has been done.

The downside of that necessary rigure during the inital stages is the high cost in both hours and ££. Lets face it, we want to install our shiney new super EMS system, chuck in some numbers and get out and drive the car, not spend weeks on dynos/tracks/road validating if our fuel pressure sensor is outputing valid and quality data etc!

Yes the base map is the most important, this was set up ie dwell time ect on the bench dyno, before it was installed in the car, the process took 4 days, when it then went onto the rolling road for all the part throttle and fine tuning, this is when we found the other problems, ie week spark to coil, fuel pressure dropping off, had we not found these problems the car would of been ready weeks ago, we then had to re make the coil loom and find the fuel pressure problem.
Hopefully its all been corrected , so its back on the rolling road again for the final power runs.
I only done the track and road runs to get it exactly how i like it, whilst driving on the road, and track.
If all goes well on Tue? then for others, it will be just a matter of putting the numbers in, and then a session on the rolling road to set the cal settings to your own personal set up, so less time spent on rolling roads and mapping.

[sundance002]

GTO600 said:

Hi Craig, how did it go on the rollers last night ?

Good news at last, she ran yesterday without a hitch, she made great power and was so smooth, she even sounds completely different, alot deeper and throaty, the throttle response is now superb, she ticks over spot on, and even the cold start this morning was spot on. Thanks to the 2 Steves at track and road and of course Terry, between them spent 6 hours doing all the runs and setting the 8 cal positions.
She made 620bhp 560 ftlb the very first run, The problem the guys encountered, was the plugs came loose so the spark blew out again and it was a panic, but they soon found the problem and she was faultless from there on.
Only thing Terry forgot was on map 8 he didnt change the cal switch from 7 so we dont the the final result but me thinks it will be the same as on the bench, so around 650bhp 570ftlb. Finally have a car to drive, now just need to get some miles on the clock and see how things settle and how reliable it all is, First impressions are very good she drives so much better, the power is there at 2000rpm and keeps pushing on all the way to 7350 were we set the rev lmt, its absolutely crazy fast, thats the only way i can describe it but still completely drivable.

[sundance002]

Thanks guys, as Vinny said in lock stock its been emotional but hopefully worth the effort.

Si, Skip and Martin have been great down at Bespoke nothing has been to much trouble, and they have gone out there way to get the car finished no matter what time of day or night it is, so big thanks to them too.

[sundance002]

Thanks gentleman, looking forward to my first track day, going to see what there is over the next week, and def going to Italy for Monza and Spa, all being well., Im back at Bespoke Saturday to collect my car, so if any of you guys are free maybe a small meet is in order, and a short drive to a pub lunch and chat about our cars. Thinking around midday?

[sundance002]

RobP said:

Glad to hear all is working fine. I'm pretty local to Bespoke, but will still be in Portugal on Saturday so won't be able to join you. When you go on your track-day, I hope you fare better than a mate of mine at Estoril today whose trip computer registered 2 mpg when we got a rare bit of dry track (GT2 running 750bhp).

Ha ha Tbh not expecting much more than 5mpg going to book Gold Track 17th March Silverstone, hope I get more laps this time, without Terry and his lap top next to me

[sundance002]

2.5bluenob]undance002 said:

keeps pushing on all the way to 7350 were we set the rev lmt,

That's a nice amount of power there sundance!
How come you have capped the revs at 7350 when others take the mountune engine to 8000. do you not think there would be a gain to be had there?

Hi Steve, yes your right they would be a gain, but by capping the revs its keeping the engine safer, and with this power I didnt see the point ofputting the extra strain on the engine.

[sundance002]

2.5bluenob said:

yes i guess that's pretty sensible. and with that much power at the taps you don't need to thrash the nuts off it all the way round to 8K RPM

What I have done is Cal 1 to 5 is capped at 7krpm as I wont be using them on track,and 6 to 8 7350rpm for the track.
I was going to have Cal 8 revving to 8k but thought better of it. The original idea was to keep everything as safe and reliable as poss, but still be fast.