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Old 09-02-2019, 02:20 PM   #21 (permalink)
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Default Re: VR4 back n the road, Flash ECU and other stuff

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Originally Posted by Unlogic View Post
I'm running the Gene sidemounts with 10" high cores from Bell Intercoolers. I believe Oohnoo here on the forum makes similar intercoolers from Bell cores to this date. Those have worked very well for me but as you say I run the 99 front with custom ducting.
Yes and that's where I need to start. There's not much point in having larger I/Cs and then not feeding them adequately

I'm told that there are others running the new billet 3SX Executioners and getting 600WHP.

For my needs, I'll be really happy if I can get >550WHP with good spool and a fat, flat torque curve between ~3600 and 7500 RPM. This, with the drive-line, brakes and suspension upgrades, should make for a pretty entertaining track day set-up.
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Motor: All forged internals, Stge 3 heads, Stg 2 cams, 3SX S/S headers, 3SX Executioners V2, CSX racing SMIC, 760 injectors, 90mm TB, Aeromotive fuel pump, dual AFR, AEM V2 ECU with full-time closed loop, Snow Performance Stage 3 Water/Methanol, 3SX fuel rail, Mishimoto radiator, tons of other details, Tanabe 3" turbo-back.
Driveline: Clutch Masters 850 twin plate, rebuilt and braced 6 speed, 2 piece hybrid propshaft, Quaife front, Torsen center, KAAZ rear diffs, AP 6 piston brakes, Ohlin coil-overs, rear adjustable camber arms
Interior: rear seat deleted, Corbeau race seats.
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Old 09-03-2019, 06:43 PM   #22 (permalink)
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Default Re: VR4 back n the road, Flash ECU and other stuff

Update - just got it back on the the road. The Clutch Masters twin plate clutch took some getting used to but is a vast improvement.

Several sensor, fueling and other tuning issues found and sorted so now its at 515 WHP at just 18lb of boost and its making >>400 lbft between 3200 and 6,800 RPM.

So all this stuff in my sig below, is working in harmony The AEM V2 was the total game changer for this setup.

The red-line is set at 8,000 RPM so 0-60 comes up with all 4 wheels chirping loudly at launch and a single up-shift. Subjectively, it feels substantially quicker than my old EVO IX which ran 0-60 in about 3.7 sec. We'll find out at the track later.

Probably more importantly, I just drove it home in SF Bay Area rush our traffic - so an hour of 20MPH stop and go in 85F weather - and it was completely drama free. It starts, stops, idles and crawls - and when the road opens up it vanishes.

Driving it with everything sorted is a total revelation! It makes my old EVO IX and current AMG (both of which were/are tuned) feel slow. The new custom Ohlins suspension is a vast improvement. Turn in is crisp and on-power under-steer has been just about eliminated with the new differentials.

Throttle modulation is sweet so placement and rotation mid-corner can be done with steering and/or gas.

Its a lot like riding my Yamaha R1M - you need to have braking points and turn-in already plugged into your brain before you hit the loud pedal - because when you do, you are there already.
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VR4 back n the road, Flash ECU and other stuff-20190903_152411-2-.jpg   VR4 back n the road, Flash ECU and other stuff-20190903_154046.jpg   VR4 back n the road, Flash ECU and other stuff-20190903_152548.jpg  
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Old 09-03-2019, 07:35 PM   #23 (permalink)
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Default Re: VR4 back n the road, Flash ECU and other stuff

Awesome! Wish I was still living in Marin so I could try to meet up and check it out.
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Old 09-12-2019, 08:44 PM   #24 (permalink)
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Default Re: VR4 back n the road, Flash ECU and other stuff

Just spent 40 minutes driving lazy "figure of 8s" in an empty parking lot to bed-in the new diff. I got some very strange looks but it seems to have smoothed out the rear LSD a lot. I'll change the diff oil tomorrow as per the bed-in process and I'll know for sure.

Got stuck in a 3MPH gridlock for an hour in >90F heat, up hill all the way, on my way back. So after >200 hill starts and stops, I'm pleased to say there was zero drama, overheating burnt out clutch etc. It drives very well in normal Bay Area gridlock, which is a huge relief and a testament to Dave at FFTech who did all the hard work.
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