Yeah, I found the fic6 quite a bit easier to understand... I especially like viewing the logs in AEMData (though you have to go through hoops, using AEMLog to convert the file format).

 

Wow, how'd you manage that?
Apparently that's the weak link? Quite a few SC owners have mentioned it.

Wonder if the kit would work better with a Flashpro...?

Are the rdx injectors working better (less cel's/limp mode) than the stock ones?

 

Well, with the SMT8L you name the Map file and can add a description. When I built my maf I wrote the description "2.5" maf?" as it was a questionable tune when I was trying to get the car to cope with larger maf tube.

Seems either the " " " or the " ? " corrupted the data. When reviewing the error logs this comment appears where it shouldn't. Even after using the "nuclear" reset option it can still be seen being sent from unit to PC causing the software to choke then rinse and repeat indefinitely, yet the tune was completely wiped rendering the car undrivable.

The RDX injectors don't effect the occurrence of the cel's or limp mode directly its all in the tune. I had rid the car of the Limp mode issue with stock injectors and FIC. Thing is when you reach the limit of any of the stock sensors or components you will likely cause limp, cel or drive-ability issues.

When my MAF readings pegged at 5v I limped, when my injectors hit 100% I run lean and at this high a duty cycle accuracy is questionable.
The car seems to be sensitive to rapid timing changes, like if you done set your map with enough resolution in one area and you jump from one area with low retard to a spot with much higher retard... but this is true for any changes.
You need to set your map for more resolution in the areas you are concerned with, mostly in boost as the ecu should be controlling most of the vacuum range.

 

^^^Thanks for the clarification.

 

HI, guys. I've been swamped in the shop and needed to go have some fun.

I cracked 16.5 at the track tonight. 2875lb race weight, stock tires, and auto trans. I adjusted the map a touch and ran a gallon of 104 on a 2/3 tank of fuel.

It does seem to run quicker with the back seats folded down. I tried it and dropped another 2 tenths from 16.7 to 16.5. Weird.

Best MPH was 84. I'm still seeing the 3rd gear power dip, where the power seems to trail off at 80 and then it catches it's breath chasing down 100mph. It speeds up past the traps. Gotta wonder if this is the start of starving the fuel pump. If I hold it in 3rd briefly and get on it, it pulls harder chasing down 100 than just running up through the gears.

I'm still unable to trip the high rpm limp mode, even with ethanol in the tank and a higher injector duty cycle. I thought I could tick it off by dumping in more fuel, but no dice. If anything, it likes to be lean with lots of timing. I fed it an additional 14 degrees on the top end and 10 degrees in the low-mid range under boost (WITH GOOD FUEL! DO NOT TRY ON 91!!!). 2500rpm is all it will give up off of the line. Light power braking got me down to a sub 2.5s 60ft.

Will update the FAQs in a bit. Not sure if you guys want my race map or not with your extra mods and limp issues. I don't think it would help anything at all.

 

holy crap the automatics are slow.


I did low 16s with maybe 15whp added to the car

 

That's cool, I'm actually at New Hampshire motor speedway right now for a 3 day event with the bmwcca (I am only here for 2).
I got my tune pretty good for open loop closed loop is still a work in progress. (Using FIC 6)
Added Meath&water injection for this event but turns out my solenoid is faulty and sticks open or closed randomly so I disabled it after a session after going limp mode on track 4 times (doesn't like meth in part throttle lol)

With my tires and suspension mods and supercharger I'm eating beemers and the occasional sti, though this is still novice run group. Several have come over and made comments about the speed lol. difference is in the line and ability to keep pace or at least not loose so much in the straights and on the hill.

Yes seats down is only wAy to go but probly bigger factor for the turns than the 1/4.

Much is over out for another session.

 

I had to go out and have a little fun and let off some steam. You can't support all of these different cult vehicles and not take part in the shenanigans from time to time . (We get teased for having a mall crawling Jeep .) I did manage to get a .056 light and a separate .226 on a pro tree vs. a .441. The guy in the other lane pulled that as a surprise, but I caught it!

I tend to think of being 280lbs slows it down more than the automatic trans does. No one seemed to catch my scale weight of 2,875lbs. There's 100lbs to be had with the spare and seats and I may try one last time to break into the 15s with that gone. That'll be quicker to remove than a diet!

We still use this car as a daily driver here at the shop. Stripping it down to race weight would ruin that. I like just being able to get out of the way of big trucks.

FYI--we just broke 0-60 in 4.93 in our new Pentastar Jeep system.

 

Damn autos heavy! had my fit weighed at the track, 2480lbs. a few 100lbs is allot for these cars. I took a couple coworkers who were less than 'Fit' out for a joy ride and noticed huge difference.

Id like to see what I would run in the 1/4 after I get this thing dialed in

 

BLAH I dont think driver weight has a big significance. Im 260 myself, so it aint helping me out!

I think the automatics just have that big of a gap in gearing compared to the manuals.

3rd gear rides out to 80mph, and when my car was fully stock, 3rd was always teh last gear. Now I use 4th for a few seconds it seems. ive trapped 83mph before, and I believe on a near perfect night trapped a 85mph in a second run. I have NEVER been able to get a good time on the very first run.

Its always that first run that tells you what your grip is like and what the climate is effecting that night (muggy, dry, cold, hot, etc..)

 

I caught that scale weight but thought it was a typo. Wow! Very interesting read regardless. Please keep us informed. I love reading about this stuff.

 

EDIT: 2,875 race weight! I was 2900lbs the first time on a nearly full tank. This last time out was 25lbs less on 2/3 tank.

My bad...

 

Another couple of weeks it would be about a years since I installed the Sprintex supercharger on my car. I am a little shy of 20, 000 miles on the supercharger at 116,000 miles. Another 5,000 miles I will have to change the charger's gear oil. My car is a daily beater averaging 90 miles daily commute. This Sprintex supercharge has been trouble free through central Florida hot and humid summer. The only problems I had initially was the harness and a bad SMT8L unit.

This past Thursday on Thanksgiving Day I adjusted all the valves, regapped all the spark plugs and replaced all the ignition coils since the boots look a bit worn. Occasion I would get cylinder misfire under high RPM load. I am hoping that the ignition coils would fix the misfire problem.

The Sprintex intake pipe needs to be removed to allow room to remove the cylinder head cover. The intake pipe o-ring was trashed during removal. I replaced it with a 54.7mm OD and 47.7 mm ID nitrile rubber o-ring. It is the largest one that I could find at Harbor Freight.

 

Yeah that Oring is a one-an-done deal... I think next time I have that elbow off Ill take sawzall to it and just use silicone coupler. no need for that kind of connection on vacuum side.

Are you saying you haven't change the SC oil yet in 20k miles?

 

Oops, my bad!!! I went back and reread the Sprintex installation manual the supercharger oil should have been change at 20,000 kilometers. Guess this weekend I will be changing the the supercharger oil with redline 75W/90NS gear oil.

 

Gulp... Good luck.

Let me know what the fluid looks like. Have you been checking the level of fluid regularly When I got mine I found it to be leaky due to the lack of thread sealer and it when hot it gets pressurized and blows more fluid than youd thin possible. I change my fluid regularly like every 2k its only 50ml so 1 quart goes a long way and is cheap insurance. If you fluid is looking a bit pearlecent or smells burnt I would replace it run about 50 miles and change again to flush it out.

 

Hum... I guess I should check my oil level in the SC... if there's any left. It hasn't exploded on my yet.

Well, my car is ready for an oil change anyway, so I will change the oil in the SC at the same time and test out the bolts I got from the UK.

 

Looks like Sprintex updated the install manual: Sprintex - Superchargers and Supercharger Systems | Manuals

It now includes a plug and play harness for the SMT8L.
The oil service interval is 40,000 km or 2years. Also 54ml (was 50ml) gear oil
Looks like they changed the MAP sensors too.
The manifold changed to include a T-map sensor?

 

Looks like after their own testing they are starting to fully optimize the system.

Common practice. Means they are actually showing a ton of support! Its a good thing to see!

Means when I finally hit a good job in a few years this will still be for sale lol

 

I briefly read through the manual, this is encouraging news !
I wonder how much the price will be with the plug and play wiring,
and when will this kit be available for US Market.