Got a new 19% Alta pulley and belt for Christmas and upgraded from my Alta 15% pulley. Have to say I see very little improvement. Boost at redline is higher. I used to see 15-16% with the 15% pulley and now I see between 17 and 18% but overall not alot of difference in acceleration was noticed. If I had to do It again I would have bought the 19% pulley upfront but I don't think I would upgrade from 15% to 19%.

 

Really! You have saved me some money! thank you.

...but I'm sure a little more boost would not hurt!

 

My experience has been different. I went from a 15% to 19% pulley, upgraded the injectors (380cc), and did an MTH update. While I am still trying to "educate" the ECU, I can say that the lower end has improved a fair amount, and the overall response up to 6k rpm has been impressive :smile: . Of course, I don't know what would have happened if I didn't do the injectors as well as the pulley. Prior to the latest mods, my car was somewhat sheepish, to say the least, at the low end. I'm sure the 264 Schrick cam contributed significantly to the low end problem. Perhaps if I didn't have that camshaft, the recent changes might not have been that dramatic. Thus, when analyzing the effects of any modification, it behooves us to consider all the other relevant mods on the car. We don't want to be comparing apples and oranges .

 

Where did you get the injectors? Did MTH make you a special program to drive them?

 

I gotta tell you mypocketrocket, I thought the difference was huge. Especially low end. The S is a turtle under 4k RPMs - even with a 15%. The 19% makes the 2k RPMs fun!

You'll also notice a big difference in the hot weather. The S with a 15% is still just too slow when the temps are high. The 19% has enough extra torque that take-off and acceleration in general is still good even with high temps and the A/C blasting.

 

My understanding is they are JCW injectors. I had the MTH for the 17% pulley and 380cc injectors ---my plan was to go with that size pulley, but switched my mind to 19% at the last minute. Presently, I'm waiting for the 19% package from Franz. When I submitted the original engine info to him, I emphasized the somewhat larger injectors as well as the pulley. I trust that the MTH upgrade included the injector modification....

 

How does mth have a program for all different pulley sizes and injector sizes? That would take hundreds of dyno runs. Sounds highly unlikely to me. I find it hard to believe that he has different programs for different sized pulleys. I know everyone just emails them their mods and gets a "custom" program, but I highly doubt MTH (or anyone for that matter) has a full program for more than 3 or 4 different setups. And I can't imagine a 17% or 19% with injectors is one of them. I'd be surprised if there were even programs for 17% or 19% pulleys b/c word about doing the MTH this way got out long before those pullies were popular.

 

greatgro,

I thought someone on NAM had mentioned that MTH did have programming for the 17% and 19% pulleys, but perhaps I'm wrong. Anyway, if there is only one or just a few packages, then I am truly impressed with what Franz has done, as well as the 19% pulley/injector modification. My car was "hot" at the upper end, but now that extends down to the 2+k range :smile: .

 

I know people are giving him their specs and assuming they're getting a custom program for their mods. I'm not saying that they're not getting custom tunes but how many different combos could he realistically have?
Did you run the 19% for long without the mth and injectors? B/c after a few days with the 19%, my S became "hot" in the 2k RPM range as well. And I still have the stock ECU and injectors although that will change on Thursday.

 

What do you guys mean by hot. I'm really interested in the 19%, injectors and the MTH. I already have the 2, all I need is an injector and a new map.

 

Because of time considerations I did the 19% pulley and injectors at the same time. I drove the car for 3 days before switching to the "upgraded" software. There was a definite difference () within one day of the pulley/injector install, and I believe the software change gave it a crisper feel and a some added punch at the lower end. I apologize for the subjective "analysis", but that's my story and I'm sticking to it ! BTW, I plan to install an APEXi AFC for some fine tuning, and then go the dyno route at the end of January. If that's disappointing, I'm trading in the Mini for a Prius ! Please share your impressions after the injector/ECU mods :smile: , and thanks for your comments.

 

FWIW the JCW 210bhp "upgrade" injectors are 282cc/min versus the stock 265cc/min.


380cc is great if you can get them to fit and fire correctly w/19%.

Marty

 

I have actually mapped 12 different programs for different mods, with lots of dyno time required. Just a note to let you know there are folks out there with more than 3 or 4 maps.

I'd be interested in seeing or hearing of dyno results from a before and after 15% to 19% that shows big gains.



Randy

 

I just received my MTH upgrade for the 19% pulley from Franz, and he labelled it with a 19 to differentiate the software from the 15% and 17% that I got from him. I also asked him if there was any consideration for my new injectors, however, I'm waiting for that answer :smile:.

 

Wow! For someone who has promised all sorts of dyno results over the years and never delivered, that is a funny comment.

 

Ouch... am I the only one showing SAE dyno's? LOL

 

Yep, now get your red butt to the dragstrip and post some 1/4 mile numbers. Even if your launches suck, the trap speed is a good indicator of the kind of power you're putting down.

 

I have yet to see any Mini that launches with ease without S tyres

admit it guys the Mini is on the slow side even with moderate mods
nearly got creamed by an alfa romeo 4cyl (165hp I was told) and stock...
sheesh.. its that freaking lag in first gear and not to mention a super tall 1st gear.

flame me

 

andy.... are you a half empty glass type guy or am I just nuts?

the indicator is done on a dyno.... it has been verified on another dyno
bottom line my numbers are REAL..... anyone want to play?

its put up or shut up time......

 

I'm just curious to see what your MINI does for a trap speed in the 1/4 mile, that's all.

 

I corresponded with Franz before taking the plunge 3 months ago for a map that would compliment my 19%. Let me quote him as I found his response interesting:
[size=2][/size]
[size=2]"Dear Chris,
this isn't a problem, my software works to 1.59bar pressure correctly ;-)"

btw...1.59bar = 23.06psi

In another email, he insisted the factory injectors had enough overhead to accomodate his maps and still meet the boost damands of the 19%.

He wrote me 91 & 94 octane maps. Worked great. After a couple months of ECU learning, I began to notice a slight flat spot between 3500 and 5500 rpm. Wrote him back with that observation and he tweeked the map. Flat spot gone. I don't know if he richened it a bit or leaned it out a bit. I suspect he richened it.

In short, I don't believe he actually dyno tunes each of his flashes. I'm inclined to believe he has a very thorough piece of software that calculates and builds fuel and timing maps based on values he assigns to each particular mod. Science and theory... but I'm betting he doesn't real-world tune every map he sends out. In his defense, though he is great at taking feedback and building a re-map.

I'd like to hear more on MTH success with non-factory injectors.
[/size]

 

Same here!! You should pull off some impressive numbers for the MINI world.

 

Actually, I've always answered your questions (dyno numbers, flow bench questions, etc), and any of my customers can tell you that I have delivered. My sites is one of the few that has realistic horsepower numbers listed in the catalog.

Here are some of the runs I made to develop the Unichip software:








These were all done on the Dastek dyno in Portland - here are some pics of use developing the software on the dyno:







Hope that helps!
Randy

 

why does everyone else show uncorrected numbers?

 

I read the massive thread on the MTH upgrade, but I don't get it. It looks like everyone is infactuated with Franz. I don't get how people just post there mods and 24 hours later they have files custom tuned. Is Franz doing tuning to optimize for all these mods. If he was, as everyone is saying, he must have (according to the posts) roughly 24 types of gasoline sold all over the world, 7 or 8 intakes, 9 exhaust systems, pulleys of all sizes..... And he just creates all these files. I know people are saying that they are seeing an improvement, but the dynos seem kind of iffy. Who is this guy anyway. Doesn't look like he works for MTH. Has anyone personally met him? What stops him from just disappearing? He seems to be just this invisible person on the other side of an e-mail address. Does he even own a Mini? I just picture this guy as some acne covered teen sitting in his basement, who doesn't even have a drivers license, maybe in a wheelchair, and just creating files with this cool Cartune software he downloaded in between playing games of Grand Theft Auto and his mom yelling at him upstairs. And he keeps hitting a jackpot every time he gets another $60 deposited into his account. Maybe he is legitimate. I don't know. It is hard to go through 2,000+ posts and decipher it. It just seems weird. Is this the same community that gives grief to Peter at M7, for a free performance upgrade. Maybe this is another episode of the twighlight zone.