I noticed a bigger performance increase after getting the RMW head installed than I did after getting the pulley put on. It was a huge and instant performance difference. I drove straight to our GTG and three other people drove it and were blown away by the difference it made. It got even better after the ECU adapted to it. Next will be the tune.

 

Wow . But with what kind of mods? if any. Are you saying a flat stock S can gain 25 WHP from a tune alone?

 

I'm unsure of the exact gain since putting my head on, but if I were to guess, 20-25 whp sounds about right, maybe a bit more. When I get a tune on it i'll let you know how that changes .

Happy Birthday Jan, hope you're having a better day than me. Someone rear ended me this morning on the way to work and smashed my bumper in.

I HATE SUV's!!!

Then the lady tried to tell me that she hit me because her car was a lemon... . I was like "What on earth are you talking about?!? More like you lack motor skills and distance judgement, I was stopped at a stop sign and you accelerated INTO me from a stop, while looking the other direction ."

Time for a new bumper... Any word on when you and Sid are going to collaborate and start shipping out pretty new bumpers Jan?

 

With a pulley, intake, exhaust, injectors and head, the tune should yeild 20-25 whp from stock.

 

RMW head and OBX header gave me 41.5 hp and 15 ft lbs. tq.

However, the dyno's were different, conditions were not identical. and first (lower) numbers were 2 1/2 years earlier. My car now has 53,000 mi. on it.

All I know is it is a LOT faster.

Plus, Jan stopped by this morning, on HIS birthday with a present for ME!! - revised tuning. The car just SCREAMS. 6700 rpm to 8000 rpm goes by so fast it's scary. I would guess it is at least another 10 -15 hp. on top of the 207.5 previously posted, but that is just my rectopuckometer speaking. and No Codes!

Boys and girls, save up for that RMW head.

 

yes I have done it over and over again... but that doesn't mean if you add a pulley, intake, exhaust that you will gain ANOTHER 25 with a retune.. you will gain what the mods lend and keep your 25 basicaly...

I have tuned many a stock mini for those who wanted to keep the car "stock" and get that punch of a pulley...

 

Steve,
If you think you only gained 10-15whp.... I think you will be pleasently surprised

 

It runs like a scalded cat, but I'm conservative by nature (other than my politics), so it's better on this forum to be politely conservative with numbers, anyway. It's all voodoo anyway.

 

yes, until you blow by them at the track

thanks goodness we haven't talked about politics

 

/me sits by rather patiently waiting for my tune.

 

we are only 19hrs away....

Rooooooooooaaaaaaddddd triiiiiiiiiiiiiippppppppppppp

you can probably find a cheap airline ticket to dallas.....wink****

 

Hey Jan, I sent you an email, we are so there

 

I dropped you an email....

 

Much Happy birthday to you Jan.

 

FWIW..... since I removed the 62 I have been impressed with the obvious breathing of the RMW head and the CMC header. I am currently on the stock ECU and a 15%.....the car is running strong but admittedly a wee bit rough in places.... I need a tune.....to get it "right" but I have only driven it 200 mi and it is still learning after 2+ years of living with a Unichip..... not sure what effect that has but if the next 200-300 mi yeild more adaptation I will let you know

I am not expressing this well but I can really tell the head/header combo is doing some very nice things....and... I can not notice an appreciable difference in power..... but my butt dyno is out of calibration due to not driving the car for about a month...

tune and dyno will happen sometime in NOV at LDG

My GF who has spent a lot of time in the car commented at how much nicer it felt.... go figue...

Happy B'day Jan

 

So we've got an initial map on my car now, last night we threw some 440 injectors in the car and bumped the rev limiter up to 8k. Felt awesome!

We decided to take it to the dyno today and fiddle with it on the dyno to refine the tune. We made about 20 HP overall, not too bad. First run of the day was 206, second was a little better at 210. Something has always been up with the ECU on my car, it tells the car to dump a CRAP load of fuel around 5800-6000 for NO reason. We weren't able to play much with the timing, as we spent most of the 5 hours of dyno time fixing that issue. We weren't knocking, IAT's were around 30 over ambient, just decided that it didn't like something, seems that something in the base maps deep in the ECU is telling it to dump fuel. Anyway, after tons of tinkering, and 23 dyno runs, we finally got the torque curve to flatten out (Mostly).

Peak HP was 232.9, although that was before we fixed the issue with the dip, Peak Torque was 190.1, on the same run, if it hadn't dipped, it looks like it would have gone up to 240-245.

We made 230.6 WHP on the final tune, and 186 ft/lbs, slightly less than our "Best" run, but in my mind, the 3 HP and 4 ft/lbs of torque was a more than acceptable compromise to gain the amount of power we gained in the mid range. Even though we revved it to 8k, all of these figures are at 7k, we made peak torque about 3600 RPM's, and peak HP at about 7050 RPM's.

From the baseline to the final tune the difference is incredible. If you look at peak HP at 6,000 RPM's, right at the dip in HP, to the final flash, where that dip is mostly eliminated, we actually added about 55 HP and 50 ft/lbs of torque. Incredible! . Jan's got some more idea's for next week, we ran out of dyno time today because of my stupid ECU dumping all that fuel, but we're both thinking this car is going to be over 240 WHP when we're done with it. And I wouldn't be surprised if we broke 195 ft/lbs of torque .

The elimination of that fuel dump has made the car a blast to drive, you really can feel 50 ft/lbs of torque!

What's more, based off the dyno graphs, we speculate that my SC belt is slipping, so i'll be swapping that out next week for a smaller one (It seems the one on there has stretched, these cars are stubborn when you try to rev them 1200 RPM's past the stock rev limiter .

On a side note, we've figured out how to modify the DSC to function like supercar traction control . More to come!

We're heading back to the dyno next Friday to smooth everything out and finalize the tune. We're hoping that with some timing we'll gain another 10-15 HP at redline, and fatten up the mid range significantly.

I'm excited, and optimistic .

 

it made the 230whp at 7k

 

Cool Nick!!!!!! Sign me up for a ride ASAP!

 

Yes I forgot to mention, 230 WHP at 7,000 RPM's, it didn't make any more power past that (Presumably because my belt is slipping).

 

Take some time off work/school and come down and visit .

 

Congrats on the new found power, it must feel real good.

 

congrats on the new tune. great #'s I'm hoping to get the same #'s on tues. when Jan tunes my car at Helix

 

In my posting #1530 above I speculated about 10-15 hp. With the JCW injectors on loan from Jan, clean fuel filter and tune, 15-25 hp. over the head alone 207 hp. would probably be more like it, based on RB155's experience.

RB - what is genesis of your forum name?

My car has old non-coated supercharger, but Gnatster's sending me 2006 takeoff so hopefully that will put me on par with RB155. I didn't want to change out superchargers but the s/c has been making noise and I think (as do Jan and Danny), that the water pump drive is going. Some s/c's run dry of lubricant and there is no ready provision for re-lubing them.

Come 100k miles and there will be big demand for superchargers for all R53 MCS's. Eaton will be real happy.

RB155 - what was ambient temp during dyno runs?

 

Ambiant was 78 according to the dyno (It was a cool day, but the garage warmed up quickly with all the hot engines revving up to redline ). The dyno applied a 2% SAE Correction factor to the figures.

I assume by genesis you're asking about the origin. I don't really remember, it's just always been my "Online Name" since I was younger (14-15). I've stuck with it for convenience .

All cars are NOT created equal for HP production. We've seen time after time dyno differences of 15-20 HP between stock cars. It's taken a while to get that "Lump" out of my HP/Torque curve, but the car drives completely different now. I have a few more tricks up my sleeve to extract another 5-6 ponies (Then hopefully I can get another 5-8 from the revised tune).

 

What did you dyno at baseline before the head?