[kiysersosae]

Well I'm looking to get some views on the 2 tuning options from Stienbauer and AC.

Both use, from what I can tell, pulse duration modifiers piggybacking the stock ECU, they are claiming 60bhp increase with no DP or intercooler.

AC is expensive at around £2500 but has a warranty of 2 years
Stienbauer is cheaper at around £1200 and only warranty the unit

I used the Stienbauer in the past on a mini jcw and it was fantastic, dynoed at 250whp - with excellent afr- and was switchable on/off, and With it off it showed 218bhp on the Dyno, so it works Just wonder about the m2 and the ability to take a n extra 60bhp

I also like the fact you could remove and dealer wouldn't be able to tell it was installed.

Any thoughts welcome

[LBBDrew]

Check out the Jb+ and JB4 threads. [Depending on the fuel] it seems most are skeptical of those kind of gains

[zenmaster]

Maybe 30bhp max with piggy.

[kiysersosae]

Originally Posted by zenmaster

Maybe 30bhp max with piggy.

But surely if both companies are we quoting the 60bhp increase it has to be close to that, it can't be 50% off?

I think I may try and get the steinbauer on trial and get it on the dyno, thus should answer alot of questions

[zenmaster]

Originally Posted by kiysersosae

But surely if both companies are we quoting the 60bhp increase it has to be close to that, it can't be 50% off?

I think I may try and get the steinbauer on trial and get it on the dyno, thus should answer alot of questions

it would raise a lot of questions as well. Terry says 20whp more on 93. That's where the 30bhp comes from. 60bhp would be great, but how?

[kiysersosae]

Originally Posted by zenmaster

it would raise a lot of questions as well. Terry says 20whp more on 93. That's where the 30bhp comes from. 60bhp would be great, but how?

I can only imagine it's through lying to the ECU about the turbo pressure, forcing it to increase pressure coupled with precise fueling / injection timing.

Has anyone worked out the volumetric efficiency of the n55 turbo?

[kiysersosae]

So the guys at stienbauer are going to send me the box and if it's not producing the quoted power on my stock m2 will give me my cash back.

I should have it by next week so fingers crossed.

[zenmaster]

Originally Posted by kiysersosae

So the guys at stienbauer are going to send me the box and if it's not producing the quoted power on my stock m2 will give me my cash back.

I should have it by next week so fingers crossed.

So a few runs before install and a few runs after?

[kiysersosae]

Originally Posted by zenmaster

So a few runs before install and a few runs after?

Yeah, 2 before, let intercooler recover and switch it on an 2 more

[kiysersosae]

I've decided I'm not going to do it, I'm to nervous and I couldn't get any hard data from stienbauer. Sorry guys

[kiysersosae]

OK... I've bought the stienbauer unit so Il install it this weekend and get it on the dyno next week to see what the results are. I'm hoping 30-40bhp

[Jevi Javi]

Originally Posted by kiysersosae

OK... I've bought the stienbauer unit so Il install it this weekend and get it on the dyno next week to see what the results are. I'm hoping 30-40bhp

is the steinbaur unit reversal?

Do before and after dyno runs!

[kiysersosae]

Originally Posted by Jevi Javi

is the steinbaur unit reversal?

Do before and after dyno runs!

Yeah, it's a piggy back. Il do 3 runs, 1 base and 2 Stienbauer on, hopefully see 30bhp

[kiysersosae]

Installed the stienbauer unit today and wow!! What a difference, especially up at 4000rpm and above. I done some pulls but the road condition were a bit greasy. A/F looked fine, timing was OK and iat was about 10c higher. Overall, it's impressive. I've got dyno booked 2 weeks today so we will see what hp gains we get. On the road though, it felt really strong, I'm guessing 30/40hp

[Speedii]

What kind of gas? 93 octane equivalent?

[kiysersosae]

Originally Posted by Speedii

What kind of gas? 93 octane equivalent?

Its shell v power so I would say 98 or 99 Ron. Only thing I would say is the power increase makes the car alot more interesting and more like my 1m in that it's fighting back

[kiysersosae]

Well it's disappointing.. A 10bhp increase with the piggyback. Stock runs were 388hp but the delta was 10bhp between stock and tuning box, that's the important bit. I guess we just verified that the piggyback tuning is not the way to go with this car/engine.

Also, iat were up at a max 80deg Celsius on a full power run, we let it cool to 28 degrees C in between runs. The timing was being pulled above 5000rpm both stock and piggy due to high iat Temps. Afr was at its lowest 10.9. I was using shell v power 99ron.

I wouldn't say the intercooler is poor, when I'm going hard on the open road I never see temperatures like that.

So the story goes, if your tuning an m2, get a flash. Unless of course, you can get a piggy custom set up on your car, might make a difference.

I'm also sure the ac shnitzer system is made by steinbauer.

[Jevi Javi]

so u got a 10 whp gain?
And the advertised gains were 50 bhp?

[kiysersosae]

Originally Posted by Jevi Javi

so u got a 10 whp gain?
And the advertised gains were 50 bhp?

I got 10bhp. They advertised 15% so 55bhp... Never quite made it! I sent an email and they are looking into it for me.. They seemed shocked but the results are there

[M+M]

Originally Posted by kiysersosae

Well it's disappointing.. A 10bhp increase with the piggyback. Stock runs were 388hp but the delta was 10bhp between stock and tuning box, that's the important bit. I guess we just verified that the piggyback tuning is not the way to go with this car/engine.

Also, iat were up at a max 80deg Celsius on a full power run, we let it cool to 28 degrees C in between runs. The timing was being pulled above 5000rpm both stock and piggy due to high iat Temps. Afr was at its lowest 10.9. I was using shell v power 99ron.

I wouldn't say the intercooler is poor, when I'm going hard on the open road I never see temperatures like that.

So the story goes, if your tuning an m2, get a flash. Unless of course, you can get a piggy custom set up on your car, might make a difference.

I'm also sure the ac shnitzer system is made by steinbauer.

Although you conclude the intercooler is NOT poor does this result suggest that there is more to be gained from upgraded intercooler to be matched with either flash or piggyback?

[kiysersosae]

Originally Posted by M+M

Although you conclude the intercooler is NOT poor does this result suggest that there is more to be gained from upgraded intercooler to be matched with either flash or piggyback?

I think given what I seen was the intercooler heat soaking on the dyno bad. But in the road at wot it does not do the same, and on the road the stienbauer feels great. So yes, the heat soaking is going to pull timing and cause a loss of power and this may be the reason for the poor figures.

To answer your question, I would say maybe!

[M+M]

so then the natural question - are you going to go for an upgraded intercooler?