Sprint Cars, Austin at Irvine Mini (he did my JCW Tuning Kit upgrade) just reset (cleared) my ecu including shift points on my Mayfair S after a timing set and valve cover replacement because of a "learned ecu timing issue". Automatic tranny now shifts at close to perfect peak torque. (or so it seems) Now I just need to go to the drag strip and get some time slips....

 

NOS INSTALLED !! No bottle yet, but I did run it with just spraying the extra gas and methanol at wide open throttle. It took it. Kinda curious what kind of time it'll run with just spraying the extra fuel and methanol. The butt dyno seems to think it was or is a little better at WOT. But only a dyno or timed 1/4 mile pass can truly tell.

 

Hi Sprint Cars seems you've got it worked out. The Mini Race Team is fighting with their ECU so seems there is ECU Trickery/Dumbing down going on. Maybe you could lend them your motor for a weekend. Any way if it acts up the BMW crowd have pretty much rewritten most of their code maybe they would help. Oh looking at our temp sensor in the plastic housing and thinking it might not give a good warning if coolant levels drop, thinking of adding something else, wont mention what got me thinking of it.

 

Lend them my motor for a weekend ?!?! Joke right ? Well, you would think a mini race team would be on top of things and not have issues. Not to mention, have access to specialty ecu programming that's not accessible to the public.
Maybe they should higher Nick at manic then. My car seems to be fine for not having any updates yet. However, spoke with mick the other day and the cars that are on the experimental stage 3 list are getting ready to be addressed.
Only thing I would like to see is someone come up with a way to adjust the perimeters for the automatic Trans cars. If they did, it'd be well worth owning an auto Trans car at that point. But with the power it's make in the rpm range. I don't recommend it at this time.
I haven't got an issue with that temp sensor so I really don't understand what your talking about.

 

The new race cars are running the B48 motor. It's essentially a stock 2015 engine with different ECU control (Motec I believe) and straight-piped exhaust. It's a completely different animal than the N14 and N18 motors we're dealing with here. Any issues they have are inherent when running a stock motor in a race car essentially and not due to issues you and I would have.

 

Yes I know different engines. its just about General BMW or Bosch Policies about how they go about setting up the systems, the code may be different but the idea of closed systems that second guess stuff is the same probably a good bit of shared code even on an updated system whatever designation they use.

 

On the sensor its just a safety thought, with the sensor in the plastic housing it takes a bit to get a higher reading if the coolant drops below the sensors level, if the housing were metal it would read quicker, So a second sensor attached to metal somewhere would give better warning, I was watching my phone gauges or might have lost a motor never got an engine light. Yes just joking but I was thinking with your set up you would give the mustangs a good run, at 400hp we are in Porche GT3 weight to power ratio range you may get over that if the tune puts it all together and the exhaust scavenges well.

 

Oh also with electronic stuff that Ive worked on, even with two identical systems signal noise can become an issue when there are lots of sensors and post processing of analog inputs. I think it gets into tolerances thats why the best electronics get matched sets of components but that takes time and skill so wouldn't be used in the auto stuff.

 

A thermocouple or RTD , which ever one they are using for a temp sensor is a junction at the tip of the probe. I don't think what it's mounted in will change its response.you can buy grounded or ungrounded T/C's but that's got to do with a shield wire. If you have an air gap then then it would turn to an ambient radiation transfer to get a reading.
You may be referring to a surface mounted thermocouple if you wanting to attach it to metal such as a bolt or something but then you would not be reading coolant temp you would read block or head temp.
Just my 1.932cents

 

Sprintcar- I will post the pics of your trends tonight, been working late

 

No problem. Prolly be the only info posted about turbo output after all these builds on here. Prolly be the first to put up a dyno result too after it gets tuned.

 

Above looks like a 3rd gear punch by the 3 dips in rpm, the interesting part is the MAF. jumps right up and is a live trend ( not flat lined) till the rpm's get to 5100. Then I'm not sure if the MAF is maxed out when it flat lines due to Jeff's head and cams coming in to play or the turbo running out of breath..... Would be nice is someone could post a trend showing MAF higher than 25 lbs.



Above is the same run just putting the tic mark at the end of the run.
Nice mph on a closed track with safety crew on standby......lol



Note on this one is Jeff was coming down from 35 mph to 25 mph ,IAT was 97 deg , throttle was 17% to 21% open for 36 seconds, at that time IAT had dropped during that 36 seconds to 86 degrees before the foot hit the floor. The run lasted 23 seconds, from 34 mph to 144 mph. IAT started at 86 and finished at 111 deg F. 2 seconds later IAT was 102, would have been nice to see a little bit of a cruise to see how longer the Wagner took to cool down....

I hope some other fellow mini's can post some trends, would be nice to have something to bump to with the same parameters so we can all learn....

 

That was awesome ridindirty. Thank you so much for posting and the explanations. I'm gonna be doing a data log again since I made a few mods. ( eyes rolling and whistling ) I'll get that cool down for the intercooler so you can see how well it cools down. I think that Wagner cooler was a really good investment tho.
And folks, on a 95 degree day. IAT at 111
I ran he car at Cecil county dragway in Maryland. I left it in normal shifting mode, no sport mode, traction control was still on. The car totally shifted on its own and I only pushed the throttle til it hit the bump. Did push it to the floor Map B ( 22 lbs of boost I think/1.5 bar) let it shift totally on its own. And methanol was on.
Car ran 13.4 @ 104 mph
The first pass straight off the interstate when I got there was 13.5 @ 106 mph.

 

Have you measured the flow rate from your methanol setup? I forget what system you're using?

I'm not knowledgable at all on the MAF sensor other than I think it's a 2.5 bar sensor (absolute) which would max out at ~21.5 psig after which time the computer is extrapolating in order to compute the mass airflow.

 

I wish I could get good logs. Whenever I check them on a spread sheet I get big holes in the data sets where it counts and Ive tried several setups not Pro XL though, do they have Mini specific PID's ? the 25lbs/min and 22psi are about where my numbers get all messed up the map sensor is rated 20psi so what voltages it puts out above that and how clean is questionable I wanted to pull it and test it on a pvc tube but my adjustable power supply is AWOL. What are the specs on the MAF and can anyone check it on a good flow bench. I will be working out some new tuning so will put up what I get though my setup is a bit different and I am happy with 300ish on this build.

Yes a surface mount temp sensor under the spark plug would be nice but a bit messy to get in. Old school coolant temp sensors with metal jacket in metal housing would give good warning ive tested that too many times LOL. I only mention any of this in case it might save someone I know Spintcars has put in the work. I dont much like thinking about being down a few quarts coolant the gauge only showed a slight blip I just dont trust the thing this way you have to have bursts of boiling coolant hit the sensor or it wont read, again never got a warning light. The Metal temps are really what count. Anyway if I figure out a reasonable fix Ill post it up. sorry to get off topic

 

Haven't measured the flow rate of the methanol.
I have 4 seperate nozzles that are mounted in that spacer plate. It was a custom made system that a vendor on NAM was kind enough to go out of his way and make it up for me. The controller is an AEM and the tank with pump is AEM as well. Not sure what size the nozzles are.

 

You should measure your meth rate. Manic suggested 500 ml. I have the Aquimist 4 , the best I could get with the biggest jet they sold me was 400 ml. I ordered the 1 jet ( I think my kit came with .8 for the biggest) I installed the 1 jet and still got 400 ml. I called Jeff at Aquimist and he told me I had to turn up the pump. With an open ended tube with no jet the pump should put out 1500-1600 , mine was 1300. After I turned the pump up one click I got 550 with the 1 size jet.
Sprintcar, in your case I would put a cup under each intake runner and make sure you are getting 125 to each runner. This would prove your distribution block is EVEN to ALL cylinders . Manic is relying on the end user to make sure they are adding enough meth to increase the octane for the hotter tune.
Don't mess your motor up over an easy check.
Now I'm making an ***-sumtion here that this is what YOUR tune is needing as far as 500ml. You might need even more with you sweet set up

 

I'm sure the numbers were already figured out.
Actually I think the were. I just don't rhem we the info. It was delayed being sent because of new nozzles were needed. I'll figure it out.
I've also fouled the plugs a couple times usually methanol. So I'm sure there is a ton of fuel going through it.

 

That has got to be keeping those valves pretty clean

 

Not sure, but since I've added a 5th fuel nozzle for WOT, I'm willing to bet between the methanol and the extra gas. It's getting a good wash down. But only if I'm beating on the car which I don't like doing since it's finally running again

 

That sucks I would be fighting myself to not beat on it Lmao

 

Hmmm cant find the spec sheet on MAF from bosch, probably made for MINI.
my bosch part number is 0280218205 looks closest to bosch HFM6 seires so could be 620kg/hr or 800kg/hr but they did make some 480kg/hr which would work out to 24.51lb/min please tell me you get over 25lb/min Sprintcar?

 

25 is maxed out for the MAF

 

Figures, the higher rated MAF probably isnt even more money for them. I do need at least one good reading, boost would be fine I think. I will see about ordering some new sensors and see if I can get things set for higher rated sensors. Well I think that does explain the strange numbers I get in my logs. Thanks one question down two new ones to think about LOL.

 

Perhaps this is why MAF sensor for JCW is different then for a S.???