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Author Topic: which tune to use, M50 or M52?  (Read 6115 times)

alameer

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which tune to use, M50 or M52?
« on: November 25, 2013, 01:56:38 PM »

Hello guys,

I am in the process of rebuilding my M50 engine and will finish rebuilding in a couple of days.
I bought a war chip of a friend and waiting for it to arrive.

my question is, i'm rebuilding my M50 engine with the m52 2.8L rotating assembly instead of the m50 2.5L assembly.
everything else is basically m50. so in such a case do i use the m50 tunes or m52 tunes?
i realize that if i go for the m52 tunes i will need to get pink injectors and 3.5 MAF
can you please advise what is the best for my case?
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ding

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Re: which tune to use, M50 or M52?
« Reply #1 on: November 28, 2013, 06:52:59 AM »

I'm sort of in the same boat here, I am putting an m52 in my obd-1 car, I was told the m50 performance tune is a great place to start by brody.  And honestly I have heard of many people running m52s with stock or performance tunes and it running fine, just not making max power.  I will say in my case I just went ahead and got 21/lb injectors and 3.5 maf, as there was a base tune made for it already.
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alameer

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Re: which tune to use, M50 or M52?
« Reply #2 on: November 30, 2013, 10:50:54 AM »

dd you try both tunes? i mean:
1. m50 tune, with stock m50 injectors and 3" maf?
then went to use:
2. M52 tune, with 21# injectors and 3.5" maf?

if you tried both of them, did you notice any difference in performance?
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ding

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Re: which tune to use, M50 or M52?
« Reply #3 on: December 04, 2013, 10:10:07 AM »

dd you try both tunes? i mean:
1. m50 tune, with stock m50 injectors and 3" maf?
then went to use:
2. M52 tune, with 21# injectors and 3.5" maf?

if you tried both of them, did you notice any difference in performance?

I have tried both tunes, but I haven't been able to get my 3.5 maf and tune to work correctly, I think the maf might be busted.  So until then I don't know, my m50 tune runs pretty strong though.
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alameer

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Re: which tune to use, M50 or M52?
« Reply #4 on: December 04, 2013, 01:07:17 PM »

i've received my chip a couple of days ago and been playing with it ever since, loving how easy and friendly it is, and looooooving the launch control feature :D

i'm just wondering if i will get more power if i switch from the 3" MAF to the 3.5 MAF with the pink injectors. maybe Brody can help us with this matter.
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alameer

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Re: which tune to use, M50 or M52?
« Reply #5 on: December 08, 2013, 04:30:21 PM »

any help on the matter mentioned above? :(
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millerperformance

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Re: which tune to use, M50 or M52?
« Reply #6 on: December 12, 2013, 06:52:10 PM »

Upgrading to the 3.5" MAF is only necessary if you are maxing out the stock (or close to it) MAF. Changing the MAF size does nothing for power unless A) You are at the upper limits of the stock MAF B) the 3" intake is proving to be a choking point.

Many people upgrade to the 3.5" MAF just because. Others think it gives the more power. We provide tunes because we don't want to argue with the people who think it gives more power and the fact that it is extremely popular to do "just because."

My car is making almost 300 WHP N/A - 11.5:1 compression big cam S50. I am using the 3.5" MAF because the stock MAF couldn't handle it as well as the 3" intake was posing as a restriction point.
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alameer

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Re: which tune to use, M50 or M52?
« Reply #7 on: December 23, 2013, 03:37:35 PM »

Thanks for your input buddy, nice to see the S50 pushing close to 300 WHP, impressive numbers i'd say.

how can I squeeze the max out of my 2.8 stroked M50 engine?
what tune is the best to use? keeping in mind that i'm not planning on dyno tuning it just yet.
my engine is basically an M50 engine with 2.8 crank and rods, and 2.5 pistons from my old vanos engine, which are 1mm higher than the 2.8 pistons providing higher compression.
other mods are ALPINA headers, and lightened flywheel

which tune from the tunes published should i use? do you have a more suitable tune for me than the ones published?

your feedback on how to squeeze out the most HP & TQ out of this engine is most appreciated.
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alameer

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Re: which tune to use, M50 or M52?
« Reply #8 on: June 29, 2014, 01:56:48 AM »

up
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Grimchan

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Re: which tune to use, M50 or M52?
« Reply #9 on: August 29, 2019, 06:45:45 PM »

Thanks for your input buddy, nice to see the S50 pushing close to 300 WHP, impressive numbers i'd say.

Id say youre pretty close already maxing it out. Unless you want to dump serious money to sqeeze out that last bit of power. Which at that point you might as well boost it. Youll make a lot more power than n/a. M50's/s50's have the bigger connecting rods. So you are in luck. I have had a few people tell me that the m50 can hold 15psi safely with a thicker headgasket. And push up to 25psi but being really risky😂😂 bimmerforums is your friend when it comes to this stuff. Good luck the hrsprs hunt. Got to get them buff horses🤙🤙

how can I squeeze the max out of my 2.8 stroked M50 engine?
what tune is the best to use? keeping in mind that i'm not planning on dyno tuning it just yet.
my engine is basically an M50 engine with 2.8 crank and rods, and 2.5 pistons from my old vanos engine, which are 1mm higher than the 2.8 pistons providing higher compression.
other mods are ALPINA headers, and lightened flywheel

which tune from the tunes published should i use? do you have a more suitable tune for me than the ones published?

your feedback on how to squeeze out the most HP & TQ out of this engine is most appreciated.
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