[Mr Beard]

Hello
thinking to take the next step with tuning. was going to get a new turbo and methanol injektion.
but the problem is the gearbox.
is there any enhancement to zf8hp gear boxes?

[Bee Pee]

What's your concern about the gearbox and tuning ?

http://www.babybmw.net/viewtopic.php?f=74&t=83853

The car in the videos in the link above is an auto with Pure Stage 2 turbo and a whole host of bolt ons. 540bhp daily driver......

[ttimbo]

There is a torque limit for the ZF 8AT fitted to the M135i, which is just above the (unmodified).engine's output. In the early days, there was quite a bit of chat about this, but I've not heard of any broken gearboxes. As with all modding, you are taking risks.

[SteveC]

Buy an M2. That way you get the handling and brakes to go with the extra power and torque instead of a potential hand grenade with more power than its chassis can manage.

Its relatively easy to extract loads more HP and Torque from modern turbo motors. How they run in traffic jams on hot summer days is of course an entirely different question likewise how they run in the wet, constantly triggering the traction control.....driving an unbalanced car is anything but a pleasure.

An M2 is properly balanced, looks better, avoids any reliability issues, suffers less depreciation, has no hassles with insurance.....and doesn't cost a whole lot more than an M135i with a bunch of tuning gimcracks.

[Em135eye]

An M2 is also a saloon/coupe; which to me and many others, is as good as useless. Incredibly awkward rear access, useless for kids, rubbish boot that won't carry anything.
And it had the DCT box which isn't as good as the ZF 8AT.
The M2 is doubtless a good drivers car but it isn't for everyone. Anyway an M135i only needs a light tune to hit M2 power.

[Mr Beard]

an m2 would be nice but is not the same thing.
I know that there are people who go at with much power. the question just how long?
wan'na be safe.

[ovekvam]

Originally Posted by SteveC

Its relatively easy to extract loads more HP and Torque from modern turbo motors. How they run in traffic jams on hot summer days is of course an entirely different question likewise how they run in the wet, constantly triggering the traction control.....driving an unbalanced car is anything but a pleasure.

But in the wet and in traffic jams you can hold back the power and heat by going easy on the throttle. There are even driving modes to help you with that.

[SteveC]

I take your point about 2 doors....I don't need 4 doors but still find coupes less functional

What we really need is a M1.... as in 5 door full fat M car

[ovekvam]

I am sure that most of the M2 parts will fit on the F20, and some people will make something very close to a real M version of it.

[Em135eye]

Originally Posted by SteveC

I take your point about 2 doors....I don't need 4 doors but still find coupes less functional

What we really need is a M1.... as in 5 door full fat M car

I'd buy that tomorrow.

[harkes]

Several people are driving the ZF8 with +700nm. Just limit your boost to ~20psi at lower rpm - you will still make a ton of power up top. Go with the Pure Stg2

[Bee Pee]

Originally Posted by SteveC

I take your point about 2 doors....I don't need 4 doors but still find coupes less functional

What we really need is a M1.... as in 5 door full fat M car

No, whats needed is an M2 GC.

I'd sell my very-well-sorted M135i in heartbeat for one !!

[PeterPure]

I have driven pure stage1 for 14k miles and 1 year. Next and still am running pure stage2 for 17k miles. I have meth, had tbi now pi and run plenty of boost. Car has 50k+ miles now. No issues so far.

If you want a pure stage2 let me know i can hook you up

[ovekvam]

Originally Posted by Darkiedm4

I have meth, had tbi now pi and run plenty of boost.

Your car sounds like a drug addict! :-)

[PeterPure]

Originally Posted by ovekvam

Your car sounds like a drug addict! :-)

I actually already sold the meth kit 4 times and always found myself cancelling the sale lol even now that i have PI