skratch77

Just did a blast with no filters and triggered a map performance range code.going to double check everything but could this be tune related?

Car is a absolute monster in the colder weather and just when I thought everything was clutch this comes up.

GT-ER

Hmmm....the map sensors I've seen go in .5 bar ( 7.25 psi ) increments.

Meaning they are 0psig, 7.25psig, 14.5psi, 21.75psig and 29psig.

The issue I see here is that I'm sure a lot of people go above 14.5psi in these cars ( I'm almost there myself ) but the next one up is 21.75psi which is high....hmmmmmmmmmm....

Exotic-metal55

Never have seen that code before! Did you go real lean when that happened? Did it hit about 4500? Pretty sure my MAP is maxed and that is what caused the lean condition at 4500 and up and maybe even higher timing.

skratch77

I wasnt watching the a/f as I was getting on the freeway and got on it hard in second and had to let off sharp while a car was merging infront of me.

The throttle felt weird after and was really sensitive at very little throttle input would almost jerk the car.

Its been really cold with high pressure up here lately and that might have to do with it.

I went to the gym and parked the car for about 45 min and then drove around a little and the pending code went away without clearing the ecu.

I saw over 30 psi on the intake manifold pressure while I was looking at the gage on my cell.

Could be a bad sensor or just a fluke?I did the tb not to long ago so the blower had to come off,Im thinking there might be a leak maybe also.

skratch77

chiromikey

the p0106 code has been a menace to us for a while. i think it's larger tb related (directly or indirectly) as that's when i started getting that code on a regular basis. i'd love to get this figured out...

jmb614

I wouldn't think there could be a way that 178 pulley could push 30psi, even without filters and high barometric pressure. Subscribed.

skratch77

the intake psi is boost plus atmosphere so its 14.7 give or take plus pulley.

who says im on a 178

last dyno was 548whp

skratch77

damn,well since I just installed a bigger tb that makes sence,we cant all be having leaks causing the code.

what tb do you have?

I have pins 1-4 and and not 5-6 I think I swapped 2-3 instead

chiromikey

i started seeing that code with my 78mm tb several years ago and r/r'd the tb twice, replacing the map sensor both times. i continued to get the code with my 82mm tb when that came out and replaced the map sensor for the hell of it again. this is one of those areas that i just don't have an explanation for...but it's definitely not leak related.

Hammer Down

Mikey,Skratch how is your 82mm tb/inlet housing setup? Adapter plate or no adapter plate?

AWOL

You think i could get away with running no filters against a smack talking cobra owner? Just a few highway pulls, or would I get codes?

Either way, this no filter talk is intriguing

skratch77

I took the filters out to run my boys big turbo supra,he has no filters either,Iv ran no filters at the track with no codes and I think this might be tb related

Hammer Down

If you're going to do the no filter run make sure that you reset your ecu before you start your car. The idea is that you want your car reading the air that is currently going pass your sensor. So take out your filters then reset your ecu then start off slow then do a few runs from a dig and few runs from 45-80 and see how she feels.

skratch77

no adapter plate,I took an sl55 tb and drilled a hole into it at the same spot where the stock tb hooks up and connected that to the oil hose.

It bolts up perfect and I get 2.0-2.4 tps % in drive and no codes at all are coming up from the tb.

I have a spare oem 80mm that I bought just incase the amg 80mm caused codes but it didnt.

250 and its yours!!!

Hammer Down

No I don't need one I was just wondering. I had extra material added to the inlet housing and then the inlet housing bored to match the tb as the inlet housing opening is not 100% round from the factory

chiromikey

lol, it's been too long since i installed it...i don't even remember!

skratch77

gotcha,I had the stock 80mm inlet ported and bored out and the 80mm fits perfect on it.

what are you mods so far?did you end up installing a bigger tb yet? let us know if you get this same code.

from the looks of it tbal got this same code when he took his tb off to do the tb grind.I think I lossened up the map sensor harness the other day taking the tb off to put a better sealer on it and maybe the harness is a little loose that is casuing the code.

I only got the code once but Im sure it will come up again.Ill take the intake off on sat and double check the map harness.

GT-ER

Found it...our OEM map sensor is apparently 2.5bar which = 36.25psia or 21.75psig.

I don't see how you can max it...so maybe it's dirty of something.

skratch77

how often do these go bad? could of read a spike that casue the code etc.I know we are not near maxing it out lol.

enless someone is running 25 psi we are fine

Hammer Down

82mm not installed yet but soon. Will do on the code

Any thoughts on that code having something to do with the intake air temp sensor?

sneakyneon

This is only in part true, I have ploted the stock map Vs Voltage, It stops reading at 4.95 and is into the 20's however the computer will not read it up there. You will start to see issues around 3.8 volts or 17-18 psi

sneakyneon

They go bad often are are sensitive to moisture

GT-ER

Hmmm...wonder why would Bosch do this? Maybe their timing/fuel maps only go to 17ish psi?