I recently had a new wastegate actuator put on my B6 because i destroyed the old one. Ibought a MBC from ECS Tuning but when I got the actuator installed the boost levelwould not go past 23psi because of the electronic stock one or whatever. So this morning it was running fine, and then i got in my car after work today and it wouldnt even boost up to 5 psi. I tried turning it off and turning it on 3 times. Ithink it has to be an electronic issue or a vacuum leakbecause the boost gauge idles fine and there are no foreign noises coming out from the engine or anywhere else.Does anyone have any insight on what this could be? I hope to god its just an electrical issue because I can install the MBC and get rid of the electronic one. Thoughts anyone???

 

your in limp mode

 

What exactly is limp mode? Is that an actual term or just a slang way of saying my car is messed up.

 

it means your cars ***** is flacid[8D]


jk, its a real term. either clear the codes at autozone, or disconnect the neg terminal and turn on your interior lights to drain the remaining power. let it sit for ~5 min and then reconnect it and it should be out of limp mode. just make sure you have the radio code if you do that

it usually happens when you overboost and run too lean, its a safety feature

 

what do you mean by running too lean? Sorry I'm new to all these terms.

 

lean is to little fuel
rich is to much feul
stoich is perfect.

You car hit limp most likely do to overboosting. Just please tell me you didnt get the forge mbc with the 3 lines.

 

Actually it is the forged manual boost controller but its not even installed because the new wastegate actuator solved the overboost issue on the spot. I had blown the oldactuator and it was letting so much air in that it would hit like 26-27psi easy. Now it will peak at about 22-23psi when i hammer the pedal down full throttle. Before, I couldnt floor it without the boost hitting 27psi or so.I would have to let off the throttle immediately. Scary ****. I thought limp mode was more common in automatics? My buddy said it was rare to be in limp mode with a manual. Even if it really is in limp mode, how could it be caused by overboosting? It doesnt seem logical because before, Iwas hitting higher psi and itnever did this. The new actuator makes my car boost less nowthan before and this limp mode happens because of overboost? Doesnt make sense. I dont know how i could be running lean either. I have a 255LPH fuel pump thats been installed for about 2 years. Just got it checked out about a month ago and it was fine. Im taking it over to my guys today and they are gonna run a diagnostic and check the codes. Hope this is a minor problem!!!

 

you go into limp mode if you over boost. you overboost with either manual or autos. the car sees too much boost and puts it into limp mode to avoid damage to the motor. what other mods do you have done to your car? are you chipped?

 

oh man, mods out the ***. ATP GT3071R Kit, Eurospec 2.0L smallblock, 3 inch downpipe, AWE exhaust, Spec stage 3+ clutch, mika fueling kit, walbro fuel pump, bailey DV. Lets just say i have invested a TON of money into this car. Anyway, so I go to my guy today and they checked the codes, and there were like 15 bad codes that popped up from a misfire in one of the cylinders(could be a bad coilpack) to a MAF warning code which is not uncommon from what i hear. Either way, they erased all the codes and my check engine went off!! I hadnt see that off in like two years..haha. It was kinda fun. Nonetheless the problem is not solved. Im going to go ahead and have my MBC installed and bypass the N75 Valve. Any thoughts on if this is a good idea?

 

u need to dump mika! The sw is a pos and could be part of the problem. You should be running 550 or 630cc min on uni or revo. As for that mbc. The most you can boost is about 18psi. You need to get a UNOs from forge.