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Old 06-15-2017, 01:10 PM   #2926
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Yeah I'm going to have to do something.
I've been fiddling around with the fuel map and it looks like I gained 1k RPM in spool right off the bat. Haven't touched the boost control yet. ~3k rpm now.
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Old 06-15-2017, 10:44 PM   #2927
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Yeah I'm going to have to do something.
I've been fiddling around with the fuel map and it looks like I gained 1k RPM in spool right off the bat. Haven't touched the boost control yet. ~3k rpm now.
Not to shabby
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Old 06-16-2017, 10:16 AM   #2928
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I bet you see good usable torque as low as 2k rpm once you get it tuned more. I'm so glad that turbo worked out! Makes me excited for mine some day ��
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Old 06-19-2017, 01:29 PM   #2929
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I bet you see good usable torque as low as 2k rpm once you get it tuned more. I'm so glad that turbo worked out! Makes me excited for mine some day ��
Most definitely already do. Get to work!
For pointless comparison the holset weighs 25 lbs and the GTX is ~14
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Old 06-19-2017, 04:06 PM   #2930
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For pointless comparison the holset weighs 25 lbs and the GTX is ~14
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Old 06-19-2017, 05:12 PM   #2931
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For pointless comparison the holset weighs 25 lbs and the GTX is ~14
Hey ~11lbs off the front is nothing to sneeze at. Plus think of the sigh of relief your header will breath!
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Old 06-19-2017, 11:53 PM   #2932
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Hey ~11lbs off the front is nothing to sneeze at. Plus think of the sigh of relief your header will breath!
good point!
Had Alex pilot the 240 while I fiddled with the boost control. It's currently connected to just the lower port of the wastegate. 40%-95% DC is 150 kpa to 200 kpa. 96% is 220kpa and 97% gets me in boost cut at 250kpa.
Definitely explains the overshoot.
I'm going to need to replumb it for a dual port setup.
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Old 08-10-2017, 02:00 PM   #2933
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Update. Replumbed it for a dual port setup and recalibrated the boost control. Holy moly.
Makes positive pressure at 2k rpm and 5psi by 2300 rpm at part throttle. Full boost at 3k rpm. Time to torque is ~ 1 second. (time from opening throttle to full boost in a rev range that makes full boost) Duder informed me that's quite good, OEMs specify 0.5s on factory setups.
It's so much more fun now. Even putting around town is better.

I'll get it dynoed soon
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Old 08-10-2017, 04:20 PM   #2934
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Neat
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My knob has a big chunk of steel on it
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Old 08-10-2017, 04:23 PM   #2935
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Have you ever taken it to a drag strip?
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Old 08-11-2017, 01:09 PM   #2936
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Neat

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Have you ever taken it to a drag strip?
Nope. The M90 hates fast shifting but more importantly I don't want to.
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Old 08-11-2017, 02:27 PM   #2937
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Originally Posted by Homer View Post
Update. Replumbed it for a dual port setup and recalibrated the boost control. Holy moly.
Makes positive pressure at 2k rpm and 5psi by 2300 rpm at part throttle. Full boost at 3k rpm. Time to torque is ~ 1 second. (time from opening throttle to full boost in a rev range that makes full boost) Duder informed me that's quite good, OEMs specify 0.5s on factory setups.
It's so much more fun now. Even putting around town is better.

I'll get it dynoed soon
sounds like its a whole new beast! when you say dual port are you talking about a new EBC vac set up?
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Old 08-12-2017, 09:20 PM   #2938
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sounds like its a whole new beast! when you say dual port are you talking about a new EBC vac set up?
VEMS has been handling the boost control since the get go. I was running a single port setup on the EWG.



Now it's a dual port so the wastegate solenoid bleeds positive pressure in to the top of the actuator to hold it closed.
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Old 08-12-2017, 09:44 PM   #2939
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Huh. I figured this routing would yield better responsiveness:

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Old 08-13-2017, 10:52 AM   #2940
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Didn't bother with it. The pierburg valve seating isn't made to do that.
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Old 09-30-2017, 01:17 PM   #2941
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Do we have dyno data update? Looking forward to the new standard after your KAIZEN activity.
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Old 09-30-2017, 01:34 PM   #2942
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Oooo I love it when you talk Lean
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Old 03-11-2018, 07:03 PM   #2943
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Been a bit since anything has happened. Had ben modify the QSRC spacers for ackermann adjustment. Made a hell of a difference.

Got tired of the tarmacs and it was time for new tires anyway. Sooooo

17x9 ET22 RPF1
245/40/17 Michelin Pilot Sport 4S

I can't put them on the car yet, waiting on adapters from motorsport tech. I'm also putting new pads and rotors on.

New wheels will drop 15 lbs per corner if you include the adapters.
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Old 03-11-2018, 07:59 PM   #2944
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Oh Lordy!!! Favorite wheel of all time, definitely in for pics of this!!!
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Old 03-12-2018, 11:39 AM   #2945
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New wheels will drop 15 lbs per corner if you include the adapters.
that should be appreciable
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Old 03-12-2018, 01:32 PM   #2946
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I was expecting to see a lighter wheel choice this time around... and I'm a fan of rpf1s, but I'm kinda surprised by the lack of euro flavor. Should be a nice upgrade from the tarmacs.
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Old 03-12-2018, 01:55 PM   #2947
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I'm pretty excited for some anodized purple accents.
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Old 03-12-2018, 03:27 PM   #2948
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Homer asked me not to say anything, but I've been working on turbine-powered whistle tips for this car. The T5 exhaust pulses make scavenging a real bear. There was almost insufficient energy to drive the Wisselator in off-peak transients but by developing an integrated MGU we have conquered this.
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Old 03-12-2018, 05:00 PM   #2949
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Homer asked me not to say anything, but I've been working on turbine-powered whistle tips for this car. The T5 exhaust pulses make scavenging a real bear. There was almost insufficient energy to drive the Wisselator in off-peak transients but by developing an integrated MGU we have conquered this.
Toes tingle at the thought.
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Old 03-13-2018, 12:50 AM   #2950
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I was expecting to see a lighter wheel choice this time around... and I'm a fan of rpf1s, but I'm kinda surprised by the lack of euro flavor. Should be a nice upgrade from the tarmacs.
Thought I'd mix it up a little. It was between the RPF1s and BBS RKs. The 17x8.5s weren't going to clear my brakes, made the decision easy. My ultimate wheel choice will remain in my back pocket/cad for a while.
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I'm pretty excited for some anodized purple accents.
Only Megan Racing's finest
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Homer asked me not to say anything, but I've been working on turbine-powered whistle tips for this car. The T5 exhaust pulses make scavenging a real bear. There was almost insufficient energy to drive the Wisselator in off-peak transients but by developing an integrated MGU we have conquered this.
I hope for an auspicious final product release.
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