AA Supercharger for Z4M
- Thread starter 2skiddy
- Start date
pokeybritches
Member
How's it going Beedub??
For those asking about water/meth- it is primarily for FI applications. While you can get an effective octane increase, this won't give you much power on a NA engine. It's definitely not worth the cost IMHO. Besides $450 for the AEM kit (the minimum my shop recommended), you'll need 4-5 hours labor to have it installed. After that, you have to refill the methanol every couple of tanks of petrol. You can use certain windshield washer fluids (I believe -20 deg F are 50/50 mix), and they can't have any detergents in them (they shouldn't foam/bubble up when shaken, like soapy water). At a minimum, I would research further.
For FI cars, there are huge benefits. The water helps cool the intake charge and the effective octane increase really mainfests itself in power gains. If you want to tune to rely on meth, the gains are even greater. But, my shop doesn't recommend tuning for meth because an engine that is reliant on meth will fail rather catastrophically if there is any sort delivery problem with the meth. AEM does make a failsafe gauge that triggers certain alarms when there is a problem, but I'll give up a few hp for the peace of mind.
Beedub, you'll have to see my plans for the non-M. I'm looking at 11-12 psi with cams, tune, custom intercooler, water/meth, full Supersprint exhaust, LTW flywheel and kevlar clutch to begin with, and lowering the compression and upping the boost to 15+ psi later in the year... I've got the same Vortech unit that the ESS M kits run, so I should be right in the heart of its efficiency range. It will run with (or beat) the stage 1 Z4M kits, and won't be that far off the stage 2 kits.
For those asking about water/meth- it is primarily for FI applications. While you can get an effective octane increase, this won't give you much power on a NA engine. It's definitely not worth the cost IMHO. Besides $450 for the AEM kit (the minimum my shop recommended), you'll need 4-5 hours labor to have it installed. After that, you have to refill the methanol every couple of tanks of petrol. You can use certain windshield washer fluids (I believe -20 deg F are 50/50 mix), and they can't have any detergents in them (they shouldn't foam/bubble up when shaken, like soapy water). At a minimum, I would research further.
For FI cars, there are huge benefits. The water helps cool the intake charge and the effective octane increase really mainfests itself in power gains. If you want to tune to rely on meth, the gains are even greater. But, my shop doesn't recommend tuning for meth because an engine that is reliant on meth will fail rather catastrophically if there is any sort delivery problem with the meth. AEM does make a failsafe gauge that triggers certain alarms when there is a problem, but I'll give up a few hp for the peace of mind.
Beedub, you'll have to see my plans for the non-M. I'm looking at 11-12 psi with cams, tune, custom intercooler, water/meth, full Supersprint exhaust, LTW flywheel and kevlar clutch to begin with, and lowering the compression and upping the boost to 15+ psi later in the year... I've got the same Vortech unit that the ESS M kits run, so I should be right in the heart of its efficiency range. It will run with (or beat) the stage 1 Z4M kits, and won't be that far off the stage 2 kits.
pokeybritches said:
hey pokey, whats good bro....
im really looking forward to seeing what you do with your kit....
now on n/a meth setups its hard to setup as your having to wire them into the maf or use the injector pulses ect ect on the s/c cars, you just blow it into the intercooler pipe right out the intercooler outlet, spray at 2psi progressively to max at 8psi, this gives you super-chilled AITs thus more power, lower cylinder temps, lower EGTs, Lovely steam cleaned engine internals, and high octane like effects..... Meth can be brought pretty cheaply, mix it with distilled water, job done!! Meth it imo only needed on those warm ass days where the car is getting hard consistant use.. its just another safety piece that imo has nice side effects also.
One issue with the Z4M ECU (Siemens MSS70 DME) is that it is harder to tune than any prior BMW due to the encrypted software. It is likely easier to completely replace the ECU. If the ECU is replaced, the rest of the car systems will not generally be fully functional unless a custom integration is done between the custom ECU, CAN-bus and other buses. Effectively it will be best to strip all electronics from the car when doing a custom ECU and treat it as a bare race car build.2skiddy said:After deliberating over the supercharger kit, I have decided not too. Think I might as well get a turbo kit custom made and get some serious rush!
Anyone on here gone this route?
why does no one go the Rotrex route for supercharging? TTS are based just outside silverstone and very easy to deal with
i had one on my S2000 and it was a very clean install and its a small fairly light peice of kit and quiet on tick over
not saying its better just wondered why no one ever goes down that route
i had one on my S2000 and it was a very clean install and its a small fairly light peice of kit and quiet on tick over
not saying its better just wondered why no one ever goes down that route