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Default Track reliability of a 500+whp N55? - 07-13-2017, 08:20 PM

Hey guys,
Curious to know if anyone has any experience on tracking a 500whp+ N55 (essentially maxed out ps2) and its reliability, since I didn't really get much track time on my m235i with ps2 before I sold it.

Now remember this is track day usage, not like one pull down a half mile. Im speaking about, 30+ min sessions X 10 sessions per track day, on a track with constant WOT, high gforce corners.

Assume that the N55 has proper supporting mods like an upgraded intercooler, oil cooler, radiatior, and is running on proper weighted oil (i prefer 0w40) and all maintence is done routinely.

Thanks for the imput guys.


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Default 07-13-2017, 09:51 PM

Quote:
Originally Posted by Lowon
Hey guys,
Curious to know if anyone has any experience on tracking a 500whp+ N55 (essentially maxed out ps2) and its reliability, since I didn't really get much track time on my m235i with ps2 before I sold it.

Now remember this is track day usage, not like one pull down a half mile. Im speaking about, 30+ min sessions X 10 sessions per track day, on a track with constant WOT, high gforce corners.

Assume that the N55 has proper supporting mods like an upgraded intercooler, oil cooler, radiatior, and is running on proper weighted oil (i prefer 0w40) and all maintence is done routinely.

Thanks for the imput guys.
Here is a guy that tracks his M2. He used to track his X1 35i before it was totaled in an accident.

http://f87.bimmerpost.com/forums/sho....php?t=1353408


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Default 07-13-2017, 11:06 PM

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Originally Posted by Bimmer_Boost
Here is a guy that tracks his M2. He used to track his X1 35i before it was totaled in an accident.

http://f87.bimmerpost.com/forums/sho....php?t=1353408
Forum is on maintenance atm.
I think I know who you are talking about I believe it is paradoxical3.

Problem is as far as I know he is still stock turbo, but I also read he has about 20,000 miles on it w/o issues which is pretty good.


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Default 07-13-2017, 11:22 PM

Quote:
Originally Posted by Lowon
Forum is on maintenance atm.
I think I know who you are talking about I believe it is paradoxical3.

Problem is as far as I know he is still stock turbo, but I also read he has about 20,000 miles on it w/o issues which is pretty good.
Yeah that's him. He had the stage 2 on his x1, I'm not sure if he got one for the stage 2. He talks about cooling and braking limitations which would be true with both turbos.

Random question. Do you notice that the driver's seat is at an angle and not straight at the steering wheel? Does it bother you at all?


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Default 07-13-2017, 11:37 PM

I think as long as you have the bigger radiator/oil cooler proper FMIC and tune 420-430 16-17psi 8-9* of timing using a PS2 would be a reliable "beater" setup.wouldnt be smart to go max out the turbo for 20 min sessions romping on it, I don't think you could have an oil cooler big enough to keep oil temps down this is just my opinion


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Default 07-13-2017, 11:57 PM

Quote:
Originally Posted by Newguy123
I think as long as you have the bigger radiator/oil cooler proper FMIC and tune 420-430 16-17psi 8-9* of timing using a PS2 would be a reliable "beater" setup.wouldnt be smart to go max out the turbo for 20 min sessions romping on it, I don't think you could have an oil cooler big enough to keep oil temps down this is just my opinion
Agreed... Leave it at 17-18 psi and be done with.


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Default 07-14-2017, 12:11 AM

Quote:
Originally Posted by Bimmer_Boost
Yeah that's him. He had the stage 2 on his x1, I'm not sure if he got one for the stage 2. He talks about cooling and braking limitations which would be true with both turbos.

Random question. Do you notice that the driver's seat is at an angle and not straight at the steering wheel? Does it bother you at all?
Very good question.
Ok in terms of angle with the steering wheel and view out of the windshield I don't notice it at all. Like it's not noticible even in the slightest since the angle is miniscule.

But what I do notice is a very slight difference in terms of how the seat contacts my body. Keeping in my mind I'm a skinnier man and I suppose a taller than average 5 feet 10" or 5 feet 11". I can feel the right thigh bolster touch my right leg a bit more than my left. Same goes with the right side support. But since I'm skinny it feels like the car was made for me, it's super comfortable imo, and I drove it 4 hours home from the dealer.


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Default 07-14-2017, 12:18 AM

Thanks Peter and new guy.
Yeah I'm planning to tune it pump gas only with PI, I've seen some good stuff with with flash tuning making pretty big power levels on very low boost. Something about 18 psi hitting 500whp. Personally I feel comfortable around 450whp to 480whp.

In terms of the oil cooler, it seems like the m2 stock can go like 20mins hard without issue. For 450whp I'm going to run water injection to cool cylinder temps and egt temps, this should lower oil temps I'm the motor, keep the turbo cooler and that should also keep the oil going through the turbo cooler. Plus I've seen csf radiators saying something about an oil cooler they're releasing for the m2 being able to lower oil temps by 50% over stock. This should be enough to keep 450whp for 30min sessions.

What I'm really worried about is the brakes lol. I'm going to run m5 6 pot calipers so it matches the stock rears. Since this will also be my auto cross and canyon car so it still needs to be streetable. I'm pretty sure with good pads, rotors, and brake ducting it should be ok.


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Default 07-14-2017, 12:23 AM

Quote:
Originally Posted by Lowon
Thanks Peter and new guy.
Yeah I'm planning to tune it pump gas only with PI, I've seen some good stuff with with flash tuning making pretty big power levels on very low boost. Something about 18 psi hitting 500whp. Personally I feel comfortable around 450whp to 480whp.

In terms of the oil cooler, it seems like the m2 stock can go like 20mins hard without issue. For 450whp I'm going to run water injection to cool cylinder temps and egt temps, this should lower oil temps I'm the motor, keep the turbo cooler and that should also keep the oil going through the turbo cooler. Plus I've seen csf radiators saying something about an oil cooler they're releasing for the m2 being able to lower oil temps by 50% over stock. This should be enough to keep 450whp for 30min sessions.

What I'm really worried about is the brakes lol. I'm going to run m5 6 pot calipers so it matches the stock rears. Since this will also be my auto cross and canyon car so it still needs to be streetable. I'm pretty sure with good pads, rotors, and brake ducting it should be ok.
I'm not sure if Bootmod3 has something similar to MHD but the lower coolant targets keep my oil temps below 220 even on hot days.


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Default 07-14-2017, 12:24 AM

Quote:
Originally Posted by Bimmer_Boost
I'm not sure if Bootmod3 has something similar to MHD but the lower coolant targets keep my oil temps below 220 even on hot days.
An upgraded radiator should help with that.


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Default 07-14-2017, 12:26 PM

Quote:
Originally Posted by Lowon
An upgraded radiator should help with that.
I agree, but having the water pump cycle differently will for sure help with both the stock and aftermarket radiator. If the water pump is programmed to wait for certain temps before circulating coolant than the aftermarket radiator would be held to the same conditions.


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Default 07-14-2017, 12:53 PM

Quote:
Originally Posted by Bimmer_Boost
I agree, but having the water pump cycle differently will for sure help with both the stock and aftermarket radiator. If the water pump is programmed to wait for certain temps before circulating coolant than the aftermarket radiator would be held to the same conditions.
True. But what I learned is that the stock radiator is insufficient under hard track usage anyways.

Does someone with boot mod 3 know the answer?


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Default 07-14-2017, 12:56 PM

Quote:
Originally Posted by Lowon
True. But what I learned is that the stock radiator is insufficient under hard track usage anyways.

Does someone with boot mod 3 know the answer?
I personally wouldn't know the limits of the stock radiator but I have read that others stated the same thing. Best solution would be to use a tune designed for optimized track coolant targets and a better performing radiator.


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Default 07-14-2017, 02:04 PM

Quote:
Originally Posted by Bimmer_Boost
I personally wouldn't know the limits of the stock radiator but I have read that others stated the same thing. Best solution would be to use a tune designed for optimized track coolant targets and a better performing radiator.
+1
Need a good tuner too. And at this point it seems like Dzenno at ptf is the best tuner around imo.


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Default 07-14-2017, 07:05 PM

To bad the MHD tune is not available on the M2, Wedge builds a solid tune.


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Default 07-14-2017, 07:39 PM

Quote:
Originally Posted by MiamiM3
To bad the MHD tune is not available on the M2, Wedge builds a solid tune.
I actually heard mixed things about wedge. Some say they're good, some say they're terrible.

Overall I've never heard any bad stuff about Dzenno at ptf. His tunes are apparently so smooth it feels better than factory and they make amazing power for minimal boost and no timing pulls.


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Default 07-14-2017, 08:07 PM

Quote:
Originally Posted by Lowon
I actually heard mixed things about wedge. Some say they're good, some say they're terrible.

Overall I've never heard any bad stuff about Dzenno at ptf. His tunes are apparently so smooth it feels better than factory and they make amazing power for minimal boost and no timing pulls.
I had several Dzenno PTF Cobb tunes over a period of 1 1/2 years (93 oct, 91 oct and E50). The tunes went into limp mode numerous times, because they kept over shooting the targeted boost level. That was with the stock turbo installed. I didn't have confidence in the tunes.

I have been running the Wedge MHD tune with my Pure stage 2 on 91 oct for about 8 months now with zero issues. I hit 19 psi daily on ****ty California 91 octane and the car never skips a beat, like factory on steroids. We get 25 degree weather in winter and 108 degree in summer and the tune is perfect. Ken killed it with the MHD tune, I haven't looked back.


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Default 07-14-2017, 08:26 PM

Quote:
Originally Posted by MiamiM3
I had several Dzenno PTF Cobb tunes over a period of 1 1/2 years (93 oct, 91 oct and E50). The tunes went into limp mode numerous times, because they kept over shooting the targeted boost level. That was with the stock turbo installed. I didn't have confidence in the tunes.

I have been running the Wedge MHD tune with my Pure stage 2 on 91 oct for about 8 months now with zero issues. I hit 19 psi daily on ****ty California 91 octane and the car never skips a beat, like factory on steroids. We get 25 degree weather in winter and 108 degree in summer and the tune is perfect. Ken killed it with the MHD tune, I haven't looked back.
Hmm weird, because Dzenno has been hitting crazy numbers on low boost on the m2. 500whp at 18.5 PSI with no ignition pulls (obviously properly tuned for fuel) and great afrs. Keep in mind boost doesnt mean power, its a combination of many factors that creates power.

I don't know I just heard alot of bad stuff about wedge, and with new boot mod 3 nothing but praises for PTF and Dzenno.


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Default 07-14-2017, 08:29 PM

Quote:
Originally Posted by Lowon
Hmm weird, because Dzenno has been hitting crazy numbers on low boost on the m2. 500whp at 18.5 PSI with no ignition pulls (obviously properly tuned for fuel) and great afrs. Keep in mind boost doesnt mean power, its a combination of many factors that creates power.

I don't know I just heard alot of bad stuff about wedge, and with new boot mod 3 nothing but praises for PTF and Dzenno.
I guess everyone has there own experiences. I have been down both roads and couldn't be happier with my current setup. Good luck


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Default 07-14-2017, 08:37 PM

Quote:
Originally Posted by MiamiM3
I guess everyone has there own experiences. I have been down both roads and couldn't be happier with my current setup. Good luck
thanks.
good thing boot mod 3 has open tuning now, i have an excellent tuner that tune my ~900whp STI, if It doesn't work out I'll go to him.


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Default 07-17-2017, 01:16 AM

Quote:
Originally Posted by Lowon
Overall I've never heard any bad stuff about Dzenno at ptf.
I went through dozens of revisions with Dzenno for my e82 N55 stage 2 turbo tune and never got it finished.
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Default 07-17-2017, 10:21 AM

Quote:
Originally Posted by Nugs
I went through dozens of revisions with Dzenno for my e82 N55 stage 2 turbo tune and never got it finished.
Oh I didn't know that.
Who'd you end up with?


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Default 07-17-2017, 10:49 AM

And lets not forget that PTF stopped communicating with E9x customers once BM3 was released. That is the one that really got me.
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Default 07-17-2017, 11:10 AM

Quote:
Originally Posted by JETmn
And lets not forget that PTF stopped communicating with E9x customers once BM3 was released. That is the one that really got me.
This is the stuff I didn't know.

So who's a good reputable flash tuner?


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Default 07-17-2017, 12:49 PM

Quote:
Originally Posted by JETmn
And lets not forget that PTF stopped communicating with E9x customers once BM3 was released. That is the one that really got me.
Yeah I remember hearing a bunch of upset customers. There was a thread created about it on e90post.

Quote:
Originally Posted by Lowon
This is the stuff I didn't know.

So who's a good reputable flash tuner?
IMO you should go with tuners that have the most experience with the software used to tune the car. If you're looking into Bootmod3 then I would look to see who the primary tuners are.

Ken (Wedge) and Justin (Twisted tuning) have been the primary tuners for MHD and I chose Ken since he is local to me. I have heard others say this and have seen it myself. Ken likes to take a little more of an aggressive approach. In the end you get what you pay for though. If I request a tune that has less power but consistently little to no timing pulls that is what I will get.

I would say that most customers like to run more boost and want as much power as they can get out of their setup. Saying I run 20 psi on pump gas sounds good. I have seen Denzo tune people with a ton of boost an negative timing targets. I am happy with my pump tune from Ken.


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