[houtan]

@DrRobert, @MiamiM3

You have any 91 octane logs you could share? Just want to see how mine compare.

[DrRobert]

I made 366 WHP on 91 octane. I can post dyno and logs later.

[houtan]

Originally Posted by DrRobert

I made 366 WHP on 91 octane. I can post dyno and logs later.

Awesome. would love to see both.

I will be starting a thread in the near future with my results as well. Tuning is on hold for now until ken is back from vacation. Car is running good on 91. On e30 and 18-19 psi, it is a rocket.

[DrRobert]

Originally Posted by pipsindamix

are you running a downpipe or FMIC? thats great boost #s for 91 octane.. didn't know it was possible. how much rwhp do you estimate?

I have FMIC and catted DP.

[DrRobert]

Originally Posted by houtan

Awesome. would love to see both.

I will be starting a thread in the near future with my results as well. Tuning is on hold for now until ken is back from vacation. Car is running good on 91. On e30 and 18-19 psi, it is a rocket.

Did you upgrade your LPFP? Ken was not able to tune my car for E30 with PS2 and stock fuel pumps due to misfires.

[houtan]

Originally Posted by DrRobert

Did you upgrade your LPFP? Ken was not able to tune my car for E30 with PS2 and stock fuel pumps due to misfires.

Nope. How long ago did you try e30? You should be able to run 19psi without any issues on stock fuel system. Probably even 20psi if you are not dct.

[MiamiM3]

I ran E50 on stock lpfp with stock turbo. I haven't tried an ethanol tune with the PS2 yet. I want to install LSD first.

[DrRobert]

Here is my most recent dyno on 91 octane. Mods are PS2, FMIC, catted DP (details listed in my Garage List). Sorry but I can't seem to find the logs from the dyno runs right now. Ken did a couple of final revisions after this dyno was done, so it is possible that the engine is performing a little better than this graph shows.




Here is a 3rd gear log from my final 91 octane map, which I have been running for the last few months. Very happy with it.

[DrRobert]

Originally Posted by houtan

Nope. How long ago did you try e30? You should be able to run 19psi without any issues on stock fuel system. Probably even 20psi if you are not dct.

Come to think of it, it was Dzenno who made me an E30 map over a year ago, when I was still tuning via Cobb AP. But I do recall that it was misfiring on E30 with PS2. Maybe I'll try it again with Ken, especially since the dealer has installed a new OEM LPFP since then. How much difference did you see between 91 and E30? Do you have custom MHD tunes for both with PS2?

[MiamiM3]

http://datazap.me/u/miamim3/log-1495...=3-11&mark=116

http://datazap.me/u/miamim3/log-1485...og=0&data=3-11

[bbnks2]

Originally Posted by MiamiM3

http://datazap.me/u/miamim3/log-1495...=3-11&mark=116

http://datazap.me/u/miamim3/log-1485...og=0&data=3-11

How do you know you have no misfires? can you provide logs with logging misfires?

I thought adding more parameters would slow data logging, but it doesn't seem to effect it much. I have just about everything being logged now and still gets the same intervals in logs. Better off logging them then not.

[houtan]

Originally Posted by DrRobert

Come to think of it, it was Dzenno who made me an E30 map over a year ago, when I was still tuning via Cobb AP. But I do recall that it was misfiring on E30 with PS2. Maybe I'll try it again with Ken, especially since the dealer has installed a new OEM LPFP since then. How much difference did you see between 91 and E30? Do you have custom MHD tunes for both with PS2?

Thanks for posting the dyno graph. Nice power curve and results for 91. My logs look very similar to yours. Probably one more tweak needed to finalize my 91 map.

The E30 tune is a HUGE difference. I know it was frustrating trying e30 on cobb, but the tools are there to get the tune done now. I would totally do it. If you are AT or MT, you can probably get 20ish psi on the stock fuel system. But every car is different so you may be able to get more or less. Either way, once you find out what your fuel system can handle, i dont think just upgrading the LPFP will do anything to allow you to run more boost. You will need to add some sort of additional HW to increase fueling as well (PI, TBI, Meth PI, Etc). If you go Meth PI, you can still use the stock LPFP since Meth PI has it's own pump. My friend has the Meth PI setup and his car absolutely rips and runs perfect.

Honestly, if you are enjoying 91, i think you will be happy with your results on stock fuel system and e30. I should have some logs to share next week once wedge is back from vacation. The base map i have is running a touch too much boost for a DCT car and stock fueling, so i am getting a misfire from the DCT flyhweel or my rail pressure diving. Once i have an update i will get the logs up.

[houtan]

Originally Posted by bbnks2

How do you know you have no misfires? can you provide logs with logging misfires?

I thought adding more parameters would slow data logging, but it doesn't seem to effect it much. I have just about everything being logged now and still gets the same intervals in logs. Better off logging them then not.

Agree, more data is good. There are times when i get a misfire but no code is thrown, so i am guessing MHD will capture the event in the log. Most of the time, if i get a misfire the dme will put the car in a hard limp mode. Either way, might as well log it .

[bbnks2]

Originally Posted by houtan

Agree, more data is good. There are times when i get a misfire but no code is thrown, so i am guessing MHD will capture the event in the log. Most of the time, if i get a misfire the dme will put the car in a hard limp mode. Either way, might as well log it .

I have random misfires that dme never throws a code for. Actually, I've never had the dme throw a misfire code even when fueling is breaking up badly. Logs will show the misfires.

I'm going to experiment with widening my spark plug gap. I'm currently at .018" and misfires seem to have gotten more prevalent as my tune has been leaned out. Seems counterintuitive since rail pressure is way up, but spark may not be strong enough to light the leaner mixture.

Looking forward to getting a ps2 soon. Might need to invest in supporting mods first though since I'm already having these problems with fueling just trying to get the most out of the stock turbo....

[houtan]

Originally Posted by bbnks2

I have random misfires that dme never throws a code for. Actually, I've never had the dme throw a misfire code even when fueling is breaking up badly. Logs will show the misfires.

I'm going to experiment with widening my spark plug gap. I'm currently at .018" and misfires seem to have gotten more prevalent as my tune has been leaned out. Seems counterintuitive since rail pressure is way up, but spark may not be strong enough to light the leaner mixture.

Looking forward to getting a ps2 soon. Might need to invest in supporting mods first though since I'm already having these problems with fueling just trying to get the most out of the stock turbo....

.018 is really small. I always ran stock plug stock gap on stock turbo, 91 or e30.


On PS2, I'm running the n20 plugs gapped at .022 per Pure's recommendation and everything is great.

[bbnks2]

Originally Posted by houtan

.018 is really small. I always ran stock plug stock gap on stock turbo, 91 or e30.


On PS2, I'm running the n20 plugs gapped at .022 per Pure's recommendation and everything is great.

My misfires are happening at >24psi... so a bit different. Could be due to gap too small or gap too big still. I'll experiment with opening gap first to .025" then try .015" if that fails.

Key take away is that many people out there might be getting misfires too. You need to log to find out as you can't always feel it happen and DME doesn't throw a code unless they are pervasive across several ignition cycles.

Maybe these coil upgrades have some merit for stock turbos too...

[DrRobert]

Originally Posted by houtan

Thanks for posting the dyno graph. Nice power curve and results for 91. My logs look very similar to yours. Probably one more tweak needed to finalize my 91 map.

The E30 tune is a HUGE difference. I know it was frustrating trying e30 on cobb, but the tools are there to get the tune done now. I would totally do it. If you are AT or MT, you can probably get 20ish psi on the stock fuel system. But every car is different so you may be able to get more or less. Either way, once you find out what your fuel system can handle, i dont think just upgrading the LPFP will do anything to allow you to run more boost. You will need to add some sort of additional HW to increase fueling as well (PI, TBI, Meth PI, Etc). If you go Meth PI, you can still use the stock LPFP since Meth PI has it's own pump. My friend has the Meth PI setup and his car absolutely rips and runs perfect.

Honestly, if you are enjoying 91, i think you will be happy with your results on stock fuel system and e30. I should have some logs to share next week once wedge is back from vacation. The base map i have is running a touch too much boost for a DCT car and stock fueling, so i am getting a misfire from the DCT flyhweel or my rail pressure diving. Once i have an update i will get the logs up.

So tuning for E30 works better on MHD than on Cobb? Why is that? Maybe I will give it a try. Will have to ask Ken about it. Wish there was an E85 station close to me, closest one is 30 miles away.

[DrRobert]

Originally Posted by houtan

.018 is really small. I always ran stock plug stock gap on stock turbo, 91 or e30.


On PS2, I'm running the n20 plugs gapped at .022 per Pure's recommendation and everything is great.

Pure recommends .022? I've been running the N20 plugs at .018 ever since I got PS2, as per Dzenno's recommendation. Ken said that was good too. Haven't had trouble with it.

[Turbod]

Originally Posted by DrRobert

Pure recommends 0.22? I've been running the N20 plugs at 0.18 ever since I got PS2, as per Dzenno's recommendation. Ken said that was good too. Haven't had trouble with it.

I cut the difference and run mine at 0.020

[MiamiM3]

Originally Posted by DrRobert

Pure recommends 0.22? I've been running the N20 plugs at 0.18 ever since I got PS2, as per Dzenno's recommendation. Ken said that was good too. Haven't had trouble with it.

I have 0.018" too on N20 plugs as per Dzenno and Ken, but I am getting an idle surge in reverse and I am wondering if the tight plug gap is contributing to that. Yes, I said tight gap.

[houtan]

Originally Posted by DrRobert

So tuning for E30 works better on MHD than on Cobb? Why is that? Maybe I will give it a try. Will have to ask Ken about it. Wish there was an E85 station close to me, closest one is 30 miles away.

Yeah it does. I am no expert, but i believe there are more tables with mhd and we can monitor many more parameters. Basically tuners have the proper tools for e30. Pretty awesome.

As fur spark plug gap, that's what Jesse told me to run so I am starting with that.

[YoungBlood]

Just to be a bit of a creeper, OP, if your location in your profile is accurate, there's an e85 station about 45 minutes away from you, just stock up