If I were to get a TM-15...

[Silveraudi]

Hey Guys !

I currently have the Stage II G-power kit, TM-12 ASA blower, etc.
If I were to replace the 12 with a 15 blower, what would I need to change, injectors ? Is there really a need to open the block and change pistons, etc., to run 12 or 13 PSI ?

If I´m to remain with the TM-12, being that I´m already running a 8.5 PSI pulley, I could add headers, larger intercooler and a remap (its still running on the old asatronic, kinda having a hard time to find someone to remap this here in Portugal), what kind of power should I expect from this additions ? and what else can I add ? (besides cams as I´m not looking into that right now)

I know this is a lot of questions !

Thank you very much,
Diogo

[bimmerbum46]

Hey Guys !

I currently have the Stage II G-power kit, TM-12 ASA blower, etc.
If I were to replace the 12 with a 15 blower, what would I need to change, injectors ? Is there really a need to open the block and change pistons, etc., to run 12 or 13 PSI ?

If I´m to remain with the TM-12, being that I´m already running a 8.5 PSI pulley, I could add headers, larger intercooler and a remap (its still running on the old asatronic, kinda having a hard time to find someone to remap this here in Portugal), what kind of power should I expect from this additions ? and what else can I add ? (besides cams as I´m not looking into that right now)

I know this is a lot of questions !

Thank you very much,
Diogo

I think you might only need to change the Injectors and get your ECU remapped but dont quote me on this

[beanfree]

I would contact ESS and get them to send you a tune. Get rid of the ASA tronic. I would not change to the TM-15. Smaller engines (us) work better with the TM-12. I would get headers. Do some lightening mods. Lightweight flywheel, cat-back exhaust, racing battery, lightweight wheels, racing seats and that will save you about 150 lbs.

I would consider getting 3.46 gears and a LSD. That will help with giving you more zip. The headers will help. Don't get cams. Not worth the tuning hassle.

[bimmerbum46]

I would contact ESS and get them to send you a tune. Get rid of the ASA tronic. I would not change to the TM-15. Smaller engines (us) work better with the TM-12. I would get headers. Do some lightening mods. Lightweight flywheel, cat-back exhaust, racing battery, lightweight wheels, racing seats and that will save you about 150 lbs.

I would consider getting 3.46 gears and a LSD. That will help with giving you more zip. The headers will help. Don't get cams. Not worth the tuning hassle.

I think selling his TM-12 and getting a TM-15 would be cheaper than all that stuff that you mentioned above.

[maxnathan]

I currently have the Stage II G-power kit, TM-12 ASA blower, etc.
If I were to replace the 12 with a 15 blower, what would I need to change, injectors ? Is there really a need to open the block and change pistons, etc., to run 12 or 13 PSI ?

If I´m to remain with the TM-12, being that I´m already running a 8.5 PSI pulley, I could add headers, larger intercooler and a remap (its still running on the old asatronic, kinda having a hard time to find someone to remap this here in Portugal), what kind of power should I expect from this additions ? and what else can I add ? (besides cams as I´m not looking into that right now)

Simpsons Motorsports did a conversion on a 3.0L Z4 with the TM15, Z3M headers ( excellent flow and cheaper!!) , upgraded ESS injectors and software, Shrick cams and reworked internals etc.........it was putting out close to 440 at the flywheel. For 13 PSI you need to lower compression. Overall costs are expensive though so i think it`s better to change headers, delete cats , get an LSD and retune the engine with ESS.....:woot:

Goodluck.

[beanfree]

Depends on what you are trying to do with the car.

Lightening weight is always better than adding power. At a certain point, adding power is pointless. You can't use it on the street anyway. Auto-x useless. Track and drag strip yes. Racing battery is $80 and saves you 35lbs. The rest of the stuff is a little expensive but the car will handle much better (lower unsprung and rotational weight).

Also, without proper tuning you sacrifice drivabilityand longevity. Getting rid of the ASA tronic will be the first step. Efficiency of the Supercharger unit's is also crucial in getting the most area under the curve. You will have less area under the curve with a bigger supercharger if it is less efficient.

Finally, where does it all end. I did kind of an extreme build on my car (with cams) and regret the loss of drivability.

[Silveraudi]

First of all thanks for the replies !

Well, I don´t want cams exactly for the loss of driveability. My car is mostly a DD and I don´t want a race car for that, just want it to be powerful
About the remap from ESS, well I contacted them and they said they couldn´t do it for the ASA compressor... :S

What kind of precautions should I take with a racing battery ?
Beanfree, doesn´t the lightweight flywheel make a lot of noise ? With headers (can I use Z3M headers in a 330i ?) and a true remap instead of the Asatronic, how much of a power increase could I expect ?

Thanks

[beanfree]

First of all thanks for the replies !

Well, I don´t want cams exactly for the loss of driveability. My car is mostly a DD and I don´t want a race car for that, just want it to be powerful
About the remap from ESS, well I contacted them and they said they couldn´t do it for the ASA compressor... :S

What kind of precautions should I take with a racing battery ?
Beanfree, doesn´t the lightweight flywheel make a lot of noise ? With headers (can I use Z3M headers in a 330i ?) and a true remap instead of the Asatronic, how much of a power increase could I expect ?

Thanks

The racing battery is great. I even used it one winter. That is a no brainer. As far as getting more power, you can go with a custom pulley. I had the 6incher that came with the kit and then had a 5 incher, 5.25 and 5.5 inch pulleys made. Car now has the 5.5 inch pulley. Was very quick with the 5 incher but think that overdrove the tm12 and killed it.
Lightweight flywheel was a little noisy, but nothing I could not live with. My car is a DD too. Then I got the cams and that was the end of that. Runs terrrible now and dies while I am driving. Looking to get a custom tune to resolve that issue. Lightweight flywheel was good for improving acceleration in the lower gears.
If I were you, I would get the 3.46 lsd and racing battery and call it a day. Actually, you don't even need the lsd. Just the 3.46 will improve your acceleration times and save you a ton of money.
Headers are a good idea. The problem with all these things are difficulty of tuning. Without some tuning solution, you are paying a lot of money for minimal gains. My Borla cat back saved me about 30lbs.
Get some cheap, light racing seats (my momo's were 250 each) and you will make the car lighter, faster and handle better.

Don't go power crazy. There is no end. These cars will never be that fast in a straight line. They are not designed for that. They are great on a track with the stock power. I put out 310 on a mustang dyno to the wheels (when exhaust m3's are putting out 280) on the stock 6 inch pulley (9.5psi). I can pull slightly on a stock m3 (don't forget I have a 3.07 lsd). That is fast enough.

[Mr Paddle.Shift]

Diogo, to answer your question, I have swapped out my TM-12 for a TM-15. But just FYI, I am running Technik Engineering's Stage 1, with FMIC, 25lb injectors, 8psi pulley and custom ECU map.

The TM-12 was sent for rebuilt by ASA and out of curiosity, I installed a TM-15. Just the compressor. Nothing else has changed. It works fine. The TM-15 spools up faster and you can hear the SC whine much louder.

But I have to return back to TM-12 since my car is classified as a NASA TTD class. Using the TM-15 would have bumped me one class higher.

[beanfree]

Vince: you have pm.

[Activ3]

I say just run 10lbs on the tm12, add schrick 248/256, headers, and a 3.46 diff. The 248/256 won't destroy your drivability.

[mcr_driver]

currently using a TM-15 technik kit on my M54B30 love the bigger blower

edit: sorry i originally put 12 must have been cus i was posting on my phone :rofl:

[Silveraudi]

very good info guys ! Thanks for all the replies...
I guess the most important thing for me to get now is someone that can provide me with a serious quality remap here in Portugal !
I´m not really looking into getting a 3.46 because I want top speed about 250 km/h..
Definitely looking into getting a race battery ASAP.. any special characteristics I should look into ? Also like the idea of some bucket seats, how harder is it to reach the rear seats ?

Thanks !