New SC Setup: MAF + 60lb injectors + 88mm pulley + meth = 505whp (safe)

gsfent · Oct 8, 2016

So meth and a pulley and bigger injectors and tune were good for about 95 rwhp?

Nice day at the office!

Regards,
Jerry

Redshift Discussion starter · Oct 8, 2016

Not exactly. The tune wasn't worked out because of boost leaks. I should have probably left that particular one out but just wanted to show ongoing progress from start to finish.

Redshift Discussion starter · Oct 8, 2016

By the way, the car has stock exhaust manifolds and stock M5 cats. From there it's custom but I'm told that the power and torque for this setup are excellent considering it's a very safe setup and given the stock exhaust manifolds.

gsfent · Oct 9, 2016

I have stock cats, but SS headers. I am going to have to get back down to the dyno once soon to get a current reading. Low 500's now with the more conventional alpha N and 42 lb. injectors with meth.

Regards,
Jerry

e39m5forlife · Oct 9, 2016

Redshift said:

TheShafro:

Great results, Brian!

Really liking what you did with the meth, but I would be very careful with that black supply tube. They always crack and leak washer fluid out. You might be fine right now, as I don't think any fluid travels up the hose, but if it's cracked, then everything you fill in next time will just leak right out. I always wanted to replace that hose with silicone. It looks like it's 1-1.5" ID, and just slides onto both side. You'd just have to spend time routing it.

HPS High Temp 1" ID 25mm Reinforced Silicone Heater Hose OEM Replacement Black - Sold per Feet
HPS High Temp 1" ID x 3 Feet Long 4-ply Reinforced Silicone Coolant Tube Hose Black 25mm
https://www.summitracing.com/int/parts/vpe-20472/overview/

(posting from here since I'm banned for 10 days)

Redshift Discussion starter · Oct 9, 2016

Thank you

I think something is leaking because if I overfill the feed tube up top, it comes out and levels out somewhere below. I'll investigate at some point.

I am definitely using the windshield washer feature but with the meth mixture if needed. I rarely use it so I'm not super worried about being "wasteful" or whatever. Just as long as I can clean the windshield if need be.

jamiepeers · Oct 9, 2016

I know i'm kind of looking at the washer bottle of some description but i'm not sure of exact configuration because its a touring if that matters.

How does this bottle if anyway differ from the M5 setup of washer bottle and sepertate intensive wash tank, and what have you"lost" by using the bottle(s) as a meth tank. All washer function or just some?

I'me very interested as i have just purchased a meth setup from TTFS and would like to use a tank in or near the front of the car as opposed to one in the trunk and am looking at options

e39m5forlife · Oct 9, 2016

TheShafro:

Nothing different, that reservoir is for the regular windshield washers, same on every E39. He'll lose all washing functions, unless he kept the pumps plugged in and wants to spray methanol on the windshield....which actually you can do since washer fluid has methanol in it.

gsfent · Oct 9, 2016

I have the Howerton trunk mounted setup. But I think you could fit a standard washer bottle that our cars use for the front inside the driver's side wheel well, just opposite the regular setup. It has a tall neck and good volume to hold plenty of meth. Or you could reuse the intensive washer reservoir, although it is on the small side. Both would be dedicated to meth for the engine only.

Regards,
Jerry

doug · Oct 9, 2016

Nice setup, great looking dyno chart! I'd love to find a gently used Dinan 3:45 diff. Where'd you find it?

Redshift Discussion starter · Oct 9, 2016

Thanks. I'm amazed how smooth the power and torque curves are. You can tell driving the car. It's just glassy smooth all over the map. They did a fantastic job dialing it in.

I got the diff from Adam (Clemster). Just happened to ask at the right time and waited for various people to make various decisions and it was mine. I may sell it - still pondering over the whole thing.

gsfent said:
Brian could also use the right side boot in the wagon, I believe you can get a bottle in their. Seems to me the older Audi wagons had a big washer bottle back there... (200, S6 vintage).

Regards,
Jerry

Jerry, which boot did you mean? My rear compartments on the wagon are all filled up with various BS right now so really not any spare room and I felt this was the most factory type of install possible (if you can call an S62 with a blower "factory looking").

Sailor24 said:
Nice job. Just my two cents brilliant to go back to MAFS, you are ahead of everyone else. I think MAFs are one of the most important sensors, regardless of what some tuners say. I don't think they should ever be disabled except if you have a standalone system with a MAP sending an emulated signal to the DME.

Thanks. BPC discussed this in detail with me and I did agree with them that going back to a MAF was a wise decision. I'm now firmly in the MAF camp with the exception you noted of having a MAFless system but with a MAP sensor of some sort, like the E46 M3 CSL runs.

Rontgen said:
I take it the MAF is being used in a draw-through configuration (i.e. Pre-blower inlet) as opposed to a blow-through? How did they handle the wiring and conversion from dual MAF to single? Very interesting!

For those not familiar with the name, Pro-M is the granddaddy of aftermarket MAF meters. They've been around forever and build a very high-quality product. I've owned quite a few of their MAFs dating back 20 years and they've all been outstanding.

Yes, the air filter bolts to the MAF which then bolts to the flexible intake ducting and then goes back to a "standard" ESS setup from there.

I'm told that the DME only really uses one of the two MAF input signals anyway but they did wire it into the driver's side factory MAF wiring. I went with the upgraded version with 30 data points rather than 9 for more fine tuning capability. It's fully and properly scaled for the blower's air intake so it works just like it would have from the factory.

I'm really glad Pro-M is a good company. I had asked them directly about reliability (given the common failure rates on factory MAFs) and they said they rarely see them fail so that made me feel good.

Sailor24 · Oct 9, 2016

Nice job. Just my two cents brilliant to go back to MAFS, you are ahead of everyone else. I think MAFs are one of the most important sensors, regardless of what some tuners say. I don't think they should ever be disabled except if you have a standalone system with a MAP sending an emulated signal to the DME.

Rontgen · Oct 9, 2016

I take it the MAF is being used in a draw-through configuration (i.e. Pre-blower inlet) as opposed to a blow-through? How did they handle the wiring and conversion from dual MAF to single? Very interesting!

For those not familiar with the name, Pro-M is the granddaddy of aftermarket MAF meters. They've been around forever and build a very high-quality product. I've owned quite a few of their MAFs dating back 20 years and they've all been outstanding.

ECB · Oct 9, 2016

My initial setup included a universal tank I mounted in the engine bay before I changed to the trunk mounted Howerton setup. The removal of the stock intakes does open up some room on the driver's side.

Redshift Discussion starter · Oct 10, 2016

It runs from the front.

One area has a subwoofer and the other has my NBT and pcn. No space for anything back there and probably don't want methanol in the actual cabin.

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KevinM · Oct 10, 2016

Congratulations, great update. I love your M5 Touring.

auaq · Oct 10, 2016

Is the off throttle 'jerk' thing gone or is it still there?

Redshift Discussion starter · Oct 10, 2016

Thanks Kevin. Asim, it's buttery smooth.

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auaq · Oct 10, 2016

Nice.

I just want to get rid of that abrupt jerk when I get off throttle. If I ease off then I don't feel it but at all other times it's always there.

Motorsport39 · Oct 11, 2016

Very nice! Can't wait to drop of my beast off there, they will be converting it back to a MAF setup as well! I'm curious tho, why did they switch out the 42lb injectors for 60lb?

herrubermensch · Oct 11, 2016

Don't know, but I suspect two factors: linear response and headroom.

--Peter

herrubermensch · Oct 11, 2016

Great results, big guy! More details on the draw-through MAF. Any flow limitations? I'm currently running a MAP off the vacuum hose running from under the TBs to the brake booster, but am interested in the possibility of combining it with a MAF, then either averaging the two or using them in different RPM ranges.

In any event, great result. Glad all is well. Take her back to the track! 100C is no big deal!

--Peter

philly98540 · Oct 11, 2016

Very very nice Brian! The torque curve is so smooth, it must drive sooo nice. Congrats.
I kept my meth suction line low from the pump to the spot I tapped into at the rear of the washer reservoir. Had to drill through the brake cooling duct a bit. Not sure if it matters, but I was trying to be sure the pump gets primed with a full suction line. Yours goes up some, but it may be just fine. The 50/50 makes great windshield washer fluid!!

I can't wait to drive it!

Redshift Discussion starter · Oct 11, 2016

Chris, you owe me two visits! Come on down my friend!

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Redshift Discussion starter · Oct 12, 2016

They put a tighter belt on and if gained us about 1psi but only up to 8.5. Which pulley are you going with? Curious to see what boost you hit. Exhaust matters too.

I asked them to try running without a filter to see if it was restrictive but they refused. So I have no idea.

Still using the stock BPV. They said they took it apart and checked it.

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Motorsport39 · Oct 12, 2016

Interesting, if I were you I would try removing the filter or throw on new one and run it and see if theres a difference, at least help narrow down what is causing the issue.

Going with a 3.10 S/C pulley and 7" crank, seen around 18-19psi around 6.5k but too lean to push anymore on current tune. On stock manifolds and high flow cats.

Redshift Discussion starter · Oct 12, 2016

You must have done a lot of work on that engine, no? Still running a V3-Si blower? Have you exceeded max RPM on it? That's a LOT of boost.

Motorsport39 · Oct 12, 2016

Yeah a lot has been done, its RK built. Running a V2 Ti Trim, the setup should put it right at its max limit.

Redshift Discussion starter · Oct 12, 2016

Keep us posted!

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Silent · Oct 17, 2016

Great results man..

Redshift Discussion starter · Oct 17, 2016

Thanks. Car is running nicely...but the SC sure is squealing a lot. I hear it all the time. Maybe because I cut a rectangular 5x6" section out of the wheel liner and now the sound comes from there into the cabin?

gsfent · Oct 17, 2016

Is it possible your lack of additional boost with the 88mm pulley is due to a SC issue? Had not considered that before. Can you hear the squealing with the hood open or only under load?

Regards,
Jerry

philly98540 · Oct 17, 2016

Squeal or a sc like whine? It should not squeal. What's the liner hole for and where is it located? Glad it's running good for you. The colder air over the weekend really had mine running strong. Car loves the cold!

New SC Setup: MAF + 60lb injectors + 88mm pulley + meth = 505whp (safe)

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