[Pussiwillow]

Originally Posted by FastF30

It's basically the same thing as bigger ratio roller-rocker arms... I always wonder if there was something can be done OHV... so I emailed them to see about a upgraded HPFP is required and what typical gains to be made on the N55.. Yes.. I'm very interested in this.. $1500 +/- including labor and tune...25whp up top???? yea it's worth it... I was told many years ago when you start hitting 11 second quarter mile times... the cost of Hp is roughly $1,000 per 10whp (that's everything included)... seems it still holds today... so this would be a good deal...

I hear that man
And that's the truth for sure, you get a lot of bang for buck in the beginning but once you hit that certain point it becomes a money pit lol

It's a very interesting mod, I'm about it, if it keeps the curve nice and holds power longer; that's a big win
Piece by piece I'll see what I wanna do when I go bigger turbo next year

[FastF30]

Called the Dyno place near me... only Rwd... next place that can do it is a hike... I can do Xdelete I guess...

[FastF30]

My car is going into the shop Wednesday...The waiting list is weeks... don't think these coils can get here in time...

[silvrbreez]

I'm starting to play around with the virtual dyno now, as well as just using the datalog info for "torque act. clutch (nm)" and converting to Torque (ft-lbs) and HP to try and figure clutch.

Ran a datalog this morning with the recently installed Turner Intercooler + FTP Charge Pipe + FTP Boost Pipe and I'm not seeing much of a difference if any between this morning's run and my 100% stock run back in December. It was a MUCH cooler morning back in December, so maybe that has something to do with it. I'm looking forward to keeping track of everything once I flash to MHD Stage 1 in the next week or so.

[thejeremyman9]

Originally Posted by silvrbreez

I'm starting to play around with the virtual dyno now, as well as just using the datalog info for "torque act. clutch (nm)" and converting to Torque (ft-lbs) and HP to try and figure clutch.

Ran a datalog this morning with the recently installed Turner Intercooler + FTP Charge Pipe + FTP Boost Pipe and I'm not seeing much of a difference if any between this morning's run and my 100% stock run back in December. It was a MUCH cooler morning back in December, so maybe that has something to do with it. I'm looking forward to keeping track of everything once I flash to MHD Stage 1 in the next week or so.

If you are talking about stock tune with only the IC+CP+TIC changed in between, there really shouldn't be any change. The tune is load based. If you were meeting load before and are now the car should be making the same power.

CP+TIC will do nothing for HP gains. The only reason an IC would is if your IATs were high enough that you lost timing on your pre-IC logs, but on stock tune boost is so low that timing usually isnt an issue, especially if ambient temps are low as you mentioned.

The only good news is that your new log post install doesnt indicate a boost leak, but for context, i logged post IC+CP install on stock tune before flashing stage 1 and everything looked fine, and once i flashed stage 1 i realized i had a leak, and it was huge.

[silvrbreez]

Originally Posted by thejeremyman9

If you are talking about stock tune with only the IC+CP+TIC changed in between, there really shouldn't be any change. The tune is load based. If you were meeting load before and are now the car should be making the same power.

CP+TIC will do nothing for HP gains. The only reason an IC would is if your IATs were high enough that you lost timing on your pre-IC logs, but on stock tune boost is so low that timing usually isnt an issue, especially if ambient temps are low as you mentioned.

The only good news is that your new log post install doesnt indicate a boost leak, but for context, i logged post IC+CP install on stock tune before flashing stage 1 and everything looked fine, and once i flashed stage 1 i realized i had a leak, and it was huge.

Thanks for the head's up. That's definitely something to keep an eye out for. What did you determine was the source of your boost leak?

[thejeremyman9]

Originally Posted by silvrbreez

Thanks for the head's up. That's definitely something to keep an eye out for. What did you determine was the source of your boost leak?

VRSF IC cold side was out of spec and too small to seal with VRSF CP using stock Oring. Needed to use larger aftermarket orings. Much more details on my posts in these two threads. Thats the TLDR for several weeks of work lol.

Orings: https://f30.bimmerpost.com/forums/sh....php?t=1659611

How to make a boost leak tester: https://f30.bimmerpost.com/forums/sh....php?t=1621695

[silvrbreez]

Flashed to MHD Stage 1 (93 oct) this morning and ran some data logs on the way to work. The car felt very smooth. After analyzing the data logs, everything looked good with no sign of boost leaks or timing issues and targets for boost, fuel, throttle, AFR, and IAT all appeared to be in line.

The data below was compiled using Virtual Dyno software. Gains were negligible between the car at 100% stock and with Turner IC & FTP pipes installed. Gains with MHD Stage 1 tune appear in line with what MHD publishes. The cleanest runs were stacked on the Virutal Dyno for comparison.

+50 HP (~+20%) & +65 ft-lbs (~+25%)

[thejeremyman9]

Originally Posted by silvrbreez

Flashed to MHD Stage 1 this morning and ran some data logs on the way to work. The car felt very smooth. After analyzing the data logs, everything looked good with no sign of boost leaks or timing issues and targets for boost, fuel, throttle, AFR, and IAT all appeared to be in line.

The data below was compiled using Virtual Dyno software. Gains were negligible between the car at 100% stock and with Turner IC & FTP pipes installed. Gains with MHD Stage 1 tune appear in line with what MHD publishes. The cleanest runs were stacked on the Virutal Dyno for comparison.

+50 HP (~+20%) & +65 ft-lbs (~+25%)

What octane map on S1? Your results seem similar to mine so it all lines up.

[silvrbreez]

93 oct. I'll edit my post to mention that.

[AmuroRay]

I really wish you kept up with this thread.

[thejeremyman9]

Originally Posted by AmuroRay

I really wish you kept up with this thread.

No one seemed to care about it lol. Plus, i didn't really do anything else that would add peak power since my i added all the "power mods" and went stage 2+ E20 map. I suppose i have added inlet, race IC, and some other things, but in theory those would not change power curve/#'s as compared to a stage 2+ E20 log where i was already meeting load targets and had clean timing.

I can put some of my most recent 4th gear logs into VD (with inlet, race IC, etc) and see if they show anything different. I suspect its all in the noise.

[AmuroRay]

Originally Posted by thejeremyman9

No one seemed to care about it lol. Plus, i didn't really do anything else that would add peak power since my i added all the "power mods" and went stage 2+ E20 map. I suppose i have added inlet, race IC, and some other things, but in theory those would not change power curve/#'s as compared to a stage 2+ E20 log where i was already meeting load targets and had clean timing.

I can put some of my most recent 4th gear logs into VD (with inlet, race IC, etc) and see if they show anything different. I suspect its all in the noise.

I don’t think they can - load based tune. But I think we are all still interested in your in-depth analysis, lol

[n55david]

Originally Posted by thejeremyman9

No one seemed to care about it lol. Plus, i didn't really do anything else that would add peak power since my i added all the "power mods" and went stage 2+ E20 map. I suppose i have added inlet, race IC, and some other things, but in theory those would not change power curve/#'s as compared to a stage 2+ E20 log where i was already meeting load targets and had clean timing.

I can put some of my most recent 4th gear logs into VD (with inlet, race IC, etc) and see if they show anything different. I suspect its all in the noise.

I'd be curious with the additional IC changes.. when I used to do dyno work (automotive and motorcycle) I lived for cataloging power changes for different things.

[AmuroRay]

Originally Posted by Phantom10R

I'd be curious with the additional IC changes.. when I used to do dyno work (automotive and motorcycle) I lived for cataloging power changes for different things.

Me too! I wasn’t a dyno operator, but I had a build where I documented my progress: Intake, header, tune, etc. You don’t see that much anymore - just

‘This feels fast’

[n55david]

Originally Posted by AmuroRay

Me too! I wasn’t a dyno operator, but I had a build where I documented my progRead,. Intake, header, tune, etc. You don’t see that much anymore - just

‘This feels fast’

yeah.. I know lol, it's funny

[thejeremyman9]

AmuroRay So i tossed my 3 logs into VD from after I installed the race IC. I believe the relevant things i have changed since the baseline log im comparing to (Red) would be TIC, MSTv2 inlet, MPPK airbox mod, and race IC. No change in tune or fueling used. These logs didnt really have perfect timing, but are still comparable. Part of me wants to say that the fairly consistent higher power between like 3200-3800 is from the inlet and airbox mods, but its all kindof within the noise. It's also worth noting these logs were pretty high ambient temp (high 80s F), but of course IC kept that under control. Ignore the hump at the upper end of the blue line (and very end of red) those were bumps in the road. So yeah, no real change in peak power #s, maybe a slight change in the curve down low, but no doubt those mods make a different for driveability and consistent power.

[n55david]

Originally Posted by thejeremyman9

AmuroRay So i tossed my 3 logs into VD from after I installed the race IC. I believe the relevant things i have changed since the baseline log im comparing to (Red) would be TIC, MSTv2 inlet, MPPK airbox mod, and race IC. No change in tune or fueling used. These logs didnt really have perfect timing, but are still comparable. Part of me wants to say that the fairly consistent higher power between like 3200-3800 is from the inlet and airbox mods, but its all kindof within the noise. It's also worth noting these logs were pretty high ambient temp (high 80s F), but of course IC kept that under control. Ignore the hump at the upper end of the blue line (and very end of red) those were bumps in the road. So yeah, no real change in peak power #s, maybe a slight change in the curve down low, but no doubt those mods make a different for driveability and consistent power.

yeah, intake side mods from both the inlet and air intake show increases in power in the lower mid range since the turbo has less to over come to flow air. so that checks out.

[AmuroRay]

Awesome! Unfortunately you probably can’t tell much because it’s load based, but what do the logs show? Any changes to fuel trims?

[thejeremyman9]

Originally Posted by AmuroRay

Awesome! Unfortunately you probably can’t tell much because it’s load based, but what do the logs show? Any changes to fuel trims?

I still havent done a careful analysis and comparison of pre/post race IC, might do that after this weekend.

[AmuroRay]

With MHD, the MAF G/S can tell how much power you’re making? I think you need to multiply it by 1.1 to find the approximate whp.

[thejeremyman9]

Originally Posted by AmuroRay

With MHD, the MAF G/S can tell how much power you’re making? I think you need to multiply it by 1.1 to find the approximate whp.

Ive seen estimates in the 1.1 to 1.25 range. My MAF usually peaks around 340 g/s, which using 1.1 is 375 whp. MHD quotes 440 crank HP for stage 2+ E20 map (which i am running), and with 15% drivetrain loss that is 374 HP, so the numbers line up.

Thing is, MAF doesnt account for timing, so i think there can be a lot of variability there.