I've been saving for awhile now and I am about to purchase a lot of parts. I'm looking at thumper stage 1 head, ns1 cam, adjustable cam gear, custom cat back( resonator delete, 2.5" piping into a magnaflow 11366). I already have a 17% pulley, 2% crank pulley, and intake. The question I have is, will my ecu be able to run this setup with 550cc injectors without a tune? I just need it to run until I can get a remote tune. I just don't want to damage anything in between.

Thanks in advance for the helpful responses.

 

you cannot run the 550cc injectors without a tune, the scaling is completly different, if you do everything individually and reset the ecu you can put around, i wouldnt do any high RPM WOT's but normal driving should be fine from what i hear from the stock ecu config

 

So i should be ok with this setup and stock injectors until i get a tune? I would be babying until then. Anyone have preferences for remote tunes? Im thinking of going with Way.

 

Before you purchase or install any of those items you should investigate RMW and talk to Jan personally. You might decide on the RMW Head, cam, injectors and tune. He has a lot of data to back up his successes.

 

100% need a tune to run 550's.....More fuel than a mini can use when unscsled....

 

best thing to do is just install the injectors before you tune on the dyno... should only take you 30 min

 

Are you going to buy the programmer box? (like the one that RMW sells?).

If so you can get it, and download your map, send it to Jan and he can send you back a base map for the injector size you are going to install, its not really a 'tune' but will get the bigger injectors working in the car. Then you can go to the local Dyno and get the information from it to send to Jan again, and get a tune back that you load on the car using the programming box.

This is what I did for my 380cc injectors, I will get a tune done in the future, but for now I have that added safety of being able to use the 380cc units.

The plus is you get to have each of your maps on your computer so you can change back to stock if you ever want to.

 

Yes, just don't push your RPM much over 6k @ WOT, and you should be fine until you can do the injector install & tune.

As far as remote tune, it's going to be your choice, either a RMW dyno tune or Bytetronik on the street or dyno tune. Either of these options can set you up with the starter tune to use the new injectors.

 

You really need to rethink the 17% pulley with the 2% crank pulley, unless you plan on running some massive intercooler or meth injection. Your air temps will be thru the roof at high rpm.

 

I often wondered about what the gains vs the 15% or maybe the 17% are.

I would go ahead and buy the 2% ATI Crank, but only get the 15% pulley, as the ATI is the expensive part, and you can easily change the pulley later for less than 100$ if you really need that extra boost later.

 

17% and have even seen 19% provide good lower rpm boost gains, BUT the M45 runs out of capacity early on with those pulleys---good if you want to be quick around town but rarely take the engine to redline. Once the M45 starts turning too fast it generates more heat than additional boost--hard on the supercharger and the engine. This why Sprintex was created and now people are working on a TVS 900 blower to add addition boost with less heat.

 

I appreciate all the great feedback. I am actually gong to swap out my 17% for a 15% when I do the mods I just forgot to put that in my original post. Does anyone have any input on street vs Dyno when I do my remote tune? I would think that street would be Better since this is my daily.

 

when you go to the dyno and talk to the tuner, you will be able to talk to him on what you want, but with your setup there isnt going to be much of a difference between mid range adn topend, top end might actually be lower since the pulley setup

 

As far as Street-vs-Dyno, besides "real world" conditions (temps & airflow) one of the major differences with the Bytetronik Street tuning is that they also deal w/ start up, idle & everyday drivability on a custom basis instead of letting the ECU do it for itself. IMO, w/ the addition of a Cam & ACG, this would be my prefered way to go, read these & PM the Bytetronik team if you want more specific info on what they offer.

https://www.northamericanmotoring.co...0-r52-r53.html

https://www.northamericanmotoring.co...te-tuning.html

 

You should not run a bigger cam, different head, or larger injectors without a tune, it will run wayyyyy rich, and the timing will be way off, definitely save a little more for a tune

 

I wasn't planning on running it long term without a tune. My question was if the ecu would run the bigger injectors so i could drive it to a tuner to be tuned, or have it remote tuned. I will just drive it there and then install injectors or install them once i get the initial tune to scale the injectors. I really appreciate everyones feedback so far. You guys have been great. Does anyone know of a shop in the Greenwood/Indianapolis indiana area that has tuned Minis or is knowlegable enough to tune it?

 

If you can't find anyone local check out http://www.bytetronik.com/. They will provide you with a base tune (based on the mods on your car ) that will get you going even with the 550 injectors installed. They will then refine the tune via email/internet files, based on data that you will send them from the bytetronik unit. Mynes is a very good tuner.

 

As far as I know, nothing in Indy since Way left.
But yes either of the prefered tuners should be able to supply you with a "base" map so that you can install the injectors & use the car before the actual tuning session, once you've commited to who you want to use.

IMO, esp. with remote tuning, the biggest advantantage to the Bytetronik system is information, their datalogging system is the only one that allows the tuner "full" information as to what the sensors are reading without having to find someone who has BMW/Seimens compatable software, and any tuner, no matter who, can only work with the information given to them. Even with a remote tune on a dyno, unless the operator has the appropriate software, the tuner is still only working with "basic" information

 

You can't run 550s without a tune, the car won't run.

Also you should ditch the lightweight crank pulley and put an ATI damper on before it's too late.

Also I've had bad luck with the adj cam gears moving so I don't recommend that.

If you want a head we'll sell you our WMW head, and I have NS 1 cams in stock.