2010 Challenger SRT. 426 with a Kenne Bell 3.6lc. Once boost gets over 16 psi and aircharge goes over 2.00, it cuts fuel. With a larger pulley it pulls just fine at 12 psi peak. Not sure what I'm missing? Logs and tune attached.
Mr._Norm_12psi.hpl
Cut_out_log.hpl
426_3.6LC_cal.hpt
That damn 2-bar 200kpa limit on older mopars. go over that and engines goes nuts.Originally Posted by 32vape
contact N2speed . [email protected] <[email protected]>;
2018 Trackhawk PCM/TCM tune by Dusterhoff.
Flex Fuel, MMX faux 95mm TB, GripTec 2.85, 10% ATI lower, FIC1200, ARH 1 7/8 w/cats, 180 T-stat
13 Chrysler 300S, RAM BGE 412 stroker, cam motion 232/246 619/619 118 +4, ATI 18% OD pulley
Whipple Gen5 3.0, 2.50 upper pulley, Smooth Boost controller, FIC 1200 inj. Nick W 108mm TB, FORE dual return fuel system, E85, FTI 2800 stall(SRT83380), SHR WAR Viking trans and valve body, Getrag 3.73, 1 7/8 kooks w/hi-flow cats, 3" Magnaflow Cat-back 943rwhp
Any suggestions that don't require buying a tune from someone?
Searched around the forum some more. Looks like the ecu has a hard limit of 200kpa. I'll try dropping the max kpa setting to 195. Maybe this requires some kind of signal conditioner on the map output?
Where are you adjusting the Kpa values?
I should be able to fix it just not for free, sorry
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Dodge And GM Tuning Suppport
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those Mr Norm Cars are a fun Ride, had 2010 come through shop a few years ago, some tuner Near Boco Raton FLA screwed it up, we had to rebuild it went pankl rods rods Winberg crank, J&E pistons , my kid retuned it did the MAP clamp trick and it's pushing 22lbs on it's track runs.. they keep around 10-12 for "street driving...... Right now I have a 2013 GSSR car here needs a trans.
a map clamp is one of the "tricks" to get those over 14LBS
The clamp hides boost from the PCM, which in turn keeps timing high. It also leans the fuel curve out, so VE tables need a lot of work.
The map clamp will only allow a certain voltage pass through to the pcm, the higher the voltage the PCM sees, the lower the timing and more fuel you get.
Do google search , there's a few different ways to do it.
you know the other day a customer asked what's the difference between GM and Mopar, I told him GM is mostly a community approach to tuning , while Mopar seems to be mostly about the money.
62 Biscayne 425/409 SS/D stock class car 10.60s
66 Dart 426CIG3 8.60@171 2750lbs Naturally asperated
04 Ram All Alum , 468Ci G3 10.50s @4800 lbs Naturally asperated
04 Rumble Bee, built 6.1 ,4000lbs 10.48 @ 129s MPH. Naturally asperated
05 Rumble Stock 5.7, 3.92s TUNE ONLY 13.94@98mph
Yeah no shit. And I can not even open the files of those that ARE willing to share
Good search, you answered your question. Map clamp or 195 max is the hack to get around the problem. Unfortunately you will have to tune for any pressure above the 200 kpa
Personally, I'd have N2Speed fix it the right way so the PCM can read boost above 195 kPa. Unless you're just barely over that mark. Then you can get away with clamping or setting max kPa to 195.
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