ever figure out what kinda bolt it was for the mani ?

 

the extended length manifold bolts? they're from dezod...don't see it on their site anymore...

 

Yea, Paul what type of socket or key do you use to take off and tighten those bolts?

 

i use the old fashion trick put two nuts on one stud tigthen them against eachother then u can unscrew the whole stud by turning the lower nut

 

well, still getting some tiny exhaust leaks, possiby the wastegate or the downpipe to the turbo. showed them today, taking it in tomorrow to try and resolve them all.

as for the stalling, it still does, but it is very very infrequent, and i can't provoke it. hard to pinpoint what is doing it, but it is better than before.

 

okay, so the best way i can describe the stalling occurance at this point is usually under harder than normal braking in neutral. i'm wondering if that would mean there is some sort of boost/vac leak that would cause this, because as i've been trying to probe the car to repeat the stalling, it seems that if i shift to neutral and brake hard and abruptly, the car will usually stall, whereas if i shift to neutral and gradually brake, the car can idle fine, but not 100%. but there isn't any problem with the brakes themselves, pedal feel, travel and response is just fine.

 

man ima just have to come to you and figure this thing out....i have a buttload of ideas but id have to see it for myself.

btw how are the fuel trims doing?

 

maybe p-tuning will figure it out when you take it there

 

okay...i know everybody has been patiently waiting for my update, here is what happened:

a few weeks ago, i was supposed to go to p-tuning for my tune...well the day before that was going to happened, i swerved to avoid a deer on my way home. coming around a left hand bend in the rain, i tried to go to the inside, car started to oversteer towards the inside (throttle lift oversteer) and when i went to correct it, the car snapped back and i went off the road and through a small ditch backwards. i was very upset with myself as i should have just hit the damn deer, but looking at my tire marks going off the road, i was within arm's reach of a telephone pole, so instead of buying a new car, i just needed to fix up my current one. new front and rear bumpers, a few bent suspension pieces, fix the exhuast, and i was ready again.

for the two weeks my car was in the shop, this was my rental:

so i get the car back last thursday. conditions have been cold and wet, and my summer tires are still on the car, so i didn't go into boost, but when i did...this happened:


don't know why my bolts came out, but luckily one stayed in, well, got that bolted back up...then yesterday, had to use the turbo to merge with i-95 traffic and get across 6 lanes of traffic when i hear a weird noise and this happens:

yes, my downpipe loosened itself loose. sigh...don't know why that happened, but whatever, nothing fell off the car, car was still running, got it bolted (actually they used studs this time) and today went to p-tuning.

upon inspection of the car, the boost controller, a turbo xs manual boost controller, was installed by my shop. it was supposed to be set at 0 so the car would only run on the wastegate spring, but surprise surprise, it was actually set to the maximum! but that doesn't matter, because it wasn't even properly hooked up to the wastegate to even work! BRILLIANT!

but fine, get that sorted out, p-tuning does a baseline pull on the car to see where it is at and...it started leaning out, which is strange...but it make 230 whp on pulls not on full throttle. oh, and the tuner tells me that my current MAP is pretty much a copy and paste of Moises tune. great.

now then...after tuning and increasing boost, justin comes and tells me that my car is running out of fuel, which initially i was like "WTF, i filled the car up last night" but what he meant was that this awesome return fuel system i have with an external fuel pressure regulator...was borderline useless because once the car reaches like fifty something psi of fuel pressure, a bleeder valve releases excess fuel pressure, and it needs to be removed and plugged up....so no matter how high the fuel pressure goes, the engine won't get enough fuel for higher boost levels.

now then...the stalling...it is marginally better, but that isn't saying much. p-tuning is on the same assumption as altered atmosphere, and think that the plenum is just too bit, and it won't stop stalling unless i do a standalone, which is still a maybe since the ECU still controls the throttle body, or that one of the breather hoses for the PCV is connected to the catch can, when it should go back to the manifold, but both of them go to the catch can.

so i'll talk to world racing tomorrow, see why their manifold won't work and see what they have to say. spent alot of time on the dyno, was ready to go home.

end result of the day was 274 whp/259 lb-ft torque at 10 psi.




so i'm pretty much done for now. the car runs better now. atleast it makes nearly the power i want from it. my CEL's are all completely gone now. shows you that proper tuning means that the car shouldn't have CEL's. yeah, the car is amazing on the highway. making a gain of about 45 whp isn't bad.

next plan is to get a new or used OEM manifold and gasket, swap it, and get a new fuel pump and plug that bleeder valve and get retuned.

p-tuning did right by me today. did a good job. had good solid answers and explanations for what is going on with my car. pointed out critical errors of altered atmosphere. charged me fairly. so it looks like they'll get more business from me in the future. especially to finish up this turbocharger situation.

 

christian, did you pay out of pocket for the accident?

anyways, im glad to hear that you got most of your issues resolved. I wish i could see the car in action but im living in georgia now!

which mercedes benz dealership did you go to for enterprize?

 

im glad things are working out somewhat...sucks to hear you had the wreck, glad your ok though.

 

nah, i went through insurance. if it was just the bumpers and exhaust, i would have gone out of pocket, but when i saw some bent suspension parts (tie rod, end links, possibly sub-frame) i was like forget that, better play it safe.

as for the rental, yeah, i have a friend at the enterprise in germantown euromotor cars. 2010 mercedes c300 with only 963 miles on it! practically brand new! that was a sweet ride!

 

haha thats where i used to work....im surprised i didnt see you!

 

time to change that sig!

glad u got most of your issues worked out!

 

yeah, just irritating how they are so keen on upgrading a nissan GT-R, perhaps one of the most technologically sophisticated cars to come out of japan...and they got flummoxed by a simple tC.

 

Glad to hear it all got ironed out Christian

 

well, i spoke to rob at decendant. in addition to the PCV valve re routing that p-tuning also recommended, he said i should check the o-ring gaskets and throttle body for cracks and splits, and lastly to put the factory air box back on, something to do with toyota MAF sensors being tempermental.

 

yes christian im very happy for your great sucess with ptuning, i do reccomend the factory airbox nothing is better than the factory maf holder, BUT its not neede di would go about doing the PCV routing, and checking those gasket, i hate to say i told you so lol but i really did AAM valve covers needs to be taken off now man

 

We are rerouting the pcv on Kyle's car, not that he is having problems with it but its to keep the pcv clean of oil so it wont gum up as bad and stick open. Hopefully it will go pretty good and extend the life of the pcv.

 

nice ptuning does it again, good luck with what your planning on doing in the future, will be watching, congrats