i want to see this 2.0L stroker...

 

I'm sorry guys, but you really are picking on Charger. I for one agree with him :GASP: Its not because I think Jan is necessarily wrong, Jan obviously understands the Mini. But with the "leaner" AFR's which are everywhere below 4k and above 7k. I do wonder, why so lean there? And I also wonder why the "V" as well. So don't downplay us (charger and I) like we are idiots...I also have experience tuning (though that is with N/A S2000's), I'm just trying to understand the reasoning.


I don't have a boost gauge yet, so I shouldn't assume this for the Mini...but right now, I am. Torque is nearly peaked at 3200rpm, and this is a positive displacement blower in the Mini...thus there really is no spool up time and I am assuming it is at full boost at 3200rpm. Thus, the engine is under full "compression" even at low RPM. And, heat is related to compression, not airflow. So as soon as that S/C starts compressing the air, it is building heat. I understand that at higher rpms, and higher SC speeds it becomes less efficient and will produce more, but, you are getting hot intake temps right off the bat in the low RPM area.

I would tune my S2k to a steady 12.8 AFR all the way, on the rich side to keep everything very safe and not have any worry of the car braking 3 years down the line. Being above 12.5 would kind of worry me which this is below 4k rpm. I could understand ~ high 12s -13:1 below 3k because the car is building boost.

Anyway, IMO its pretty obvious that Jan didn't gain a whole ton of power from simply tunning the AF ratios...there's definitly a big gob of it there in timing. I mean, look at where before and after tunes have the same AFR at 5500...now look at the torque spread there its about 40 ft/lbs!!! And if the AFR's are the same and all that was changed was the tune...timing is the only option...

 

"So as soon as that S/C starts compressing the air, it is building heat. I understand that at higher rpms, and higher SC speeds it becomes less efficient and will produce more, but, you are getting hot intake temps right off the bat in the low RPM area."

And If the driver had just jammed WOT in three gears till redline - there will be some heat build up /soak. Then the driver comes to a redlight, out of corner or something and will be at 3000rpm WOT with lots of heat. Dyno queen or street tuned car.... there is a difference.

I had asked before if EGT or post intercooler Temps were measured.

I went to forums for supercharged Mustangs, f150, Cobalt SS.. and all have the better looking A/F ratios with no V curve. Even the dynos on Minis on this website don't have a V ending. But I did see many of them Start off with 14:1 and taper down to 12:1 some richer. recall that too rich will foul a sparkplug.

 

 

Thats the best one iv'e heard in awhile

 

Charger,

I appreciate the care you have taken in wording your questions carefully and constructively. And I especially appreciate the way you have studiously avoided making attacks and/or accussations and very carefully clarified your points when prompted.

Jan,

Although I have not met you in person, several people I respect speak very highly of you. I don't think anyone can question the impact you have had on the Mini tuning community, your tremendous skills and knowledge, nor the undeniably remarkable results you have achieved.


Having said all that, the questions Charger asked seem constructive and useful. And it seems like we can *all* gain some important understanding about tuning Mini engines from a constructive dialog on this topic. I personally would appreciate any and all thoughts Jan (or any other NAM expert) is willing to provide related to Charger's specific questions.



--

p.s. In anticipation of several of the standard questions: Yes, I own a heavily modified Mini (not by Jan). Yes, I read *all* of the posts in this thread. Yes, I am somewhat knowledgeable about tuning Cars (if a degree in Engineering counts), but No, I am not an expert by any means. No, I do not work for any supplier/manufacturer/tuner in this industry. No, I do not hold a grudge against anyone here. No, I do not post frequently, but yes I am a long-time contributor. No, I do not secretly work for Microsoft. And most importantly: Yes, I am me.

 

^ I agree...and to "copy" your disclaimer

p.s. In anticipation of several of the standard questions: Yes, I own a Mini . Yes, I read *all* of the posts in this thread. Yes, I am somewhat knowledgeable about tuning Cars (if a degree in Aeronautical Sciences counts), but No, I am not an expert by any means. No, I do not work for any supplier/manufacturer/tuner in this industry. No, I do not hold a grudge against anyone here. No, I do not post frequently, but yes I plan to be a long-time contributor. No, I do not secretly work for Microsoft. And most importantly: Yes, I am me.

 

New to forum guys....and can someone tell me how can i contact Jan ??

email on his website don't work.....

 

Jan is an expert in the Mini field. I think many of us would like to learn from him and understand why the A/F ratio looks the way it does. But I also understand - the money side. If he tells us the true reason why then his competion will now know what to do and why to do it. So I don't blame him for not schooling us when we ask questions.

Just don't expect to come on a chat board to pimp your products and not have valid questions get posed.

 

exactly

btw... I am not "pimping" my products... these threads are started by very happy customers

 

I say again my good sir, unpossible!

 

Is there any working email for RMW ??

 

Has Jan tuned an M62 car yet? This is something I'm interested in as you can get M62 'chargers fairly cheap..... And DIY the fabrication.

 

That's exactly why I started this thread, and though I enjoy the banter sometimes I do believe some of it goes overboard against established and credible vendors (Jan and some others) that don't deserve it, but certainly never shy away from it.

Low post count newcomers that go right to attack mode will always raise the hackles of seasoned veterans here on NAM. Its usually better to just join and post quietly until you gain some mileage with your "modding" and tuning. That's what I was told when I joined NAM several years ago. Might be a good idea for "Charger".

 

Even though we have the quickest M45 Mini in the world everyday I learn something new about our chosen ride.

And sometimes I even cant explain to the customer WTF is going on but we do like challanges and finding the answers

 

There is a problem with Jan's email account right now that he is working on with his provider. In the meantime I would recommend that you private message him.

Mark

 

yes, try jbrueg@***.net

 

yes, we can tune them

 

Where have you been hiding. Project-300 looks like it's winding down so I guess you've been busy.

 

busy isn't the word

 

my offer to help still stands. I'd be happy to reply 'buy it or leave me alone' to all your emails for ya

 

 

Sure - the thousands of post counts I have with Audi TT chat forums, Harley/Buell street bikes, BMW motorcycles, supercharged Lt1 camaro, VW golf TDI, ATV's... Those don't count for anything. After all those are not engines with piston, timing, and other similiar items like the very unique and only one of a kind mini cooper. Get off your high horse if you think the Mini engine is one of a kind. Doesn't even have VVT or Vtec.


Post count means nothing about a person abilty to form a thought or have something to add or question. I could jump around answering questions and in a short time I would have over a thousand post count and not one of them could be in the drivetrain mods section but yet my thoughts would matter more?

Just like the numerous wasted posting you have: "olive oil " or double squirt gun.

 

 

Valve timing and valve control is now common place on any performance car and almost every other BMW engine. Call it VVT, Vtec, i-vtec,Valvetronic or VANOS.. ...