Diary of a Madman; TitaniumTT's see you @ DGRRXI RE-REbuild

[TitaniumTT]

Originally Posted by JhnRX7

I had this concern as well. However like you mentioned, there are a bunch of OEM's that mount the map sensor directly to the intake manifold. Additionally I have had my fuel pressure sensor mounted on the motor (indirectly) without issue as well as oil pressure sensor.

OEM's also have to make a lot of compromises that we don't if we don't feel the need to. Soooooooooo, yeah... I'll mount my sensors where I damn well please

Originally Posted by JhnRX7

That said, a failed fuel/oil pressure sensor is a lot less catastrophic than a failed MAP sensor

Yeah.... That.... the other thing that's nice about mounting a MAP sensor to the manifold, especially on top of the mani is that you don't have to worry about any sink traps in the lines collecting moisture....

Originally Posted by JhnRX7

For this reason I will mount the MAP sensor to the fire wall... I have just been bitten by the hard line bug and have been looking for ways to eliminate rubber/silicone hose wherever possible

Did you happen to see the pic of the MAP sensor mount? I'm having a dozen of them cut, and I have 1 or two left over if you're interested

Originally Posted by RX SE7EN

When I was wiring up a 2JZ for a friend I was shocked when I saw the map sensor. It wasn't anything like the GM version, it's a simple NPT threaded sensor like the rest of the sensors on the engine. It was part of the old AEM V1 ecu kit for the supra, so not sure what car it originally came on (I think supra's had MAF sensors originally so it was not from the car itself).

Either way, it completely eliminated the need for a vacuum line, and look much cleaner because it could hide under the plenum with the air intake temp sensor.

The problem with that AEM sensor is that the sensor output is not a straight line, it's more of an exponential curve. I tried to use one on a PS1000 that I tuned in an FB. The problem was the halltech didn't have enough data points to properly mimic the curve of the sensor so it was too fidgety to tune consistently. It wasn't worth it, so I stole a sensor mount from my car, popped a GM 3B MAP sensor on it and all was more than good from there.

Originally Posted by JhnRX7

This is exactly what I wanted to use, however for my boost level goals they do not make a sensor with acceptable resolution. Best I can find is a 3.5 bar. I'm sure there is one out there somewhere though.

GM 3B with a billet mount!!!

Originally Posted by JhnRX7

haha no, less than 3.5 bar. A 3 bar is even more than I need but it would still give adequate resolution. I don't need/want a lot of power for what I do.

But it is nice to be able to twist a knob and dial up the ponies from say 350 to over 500.....

Originally Posted by speedjunkie

Thanks! I might do that lol. I'd like to build a new one and move the wastegates like yours if I can, and also move my EGT sensors back a tad. I think they're contacting flame because they act funny sometimes, especially when doing a road trip down the highway.

I like your progress. I wish I had time to work on mine these days lol.

Hell man, I'm game! But it'll be a while... unless you want to send me your turbo, then I could mock it up in my FD Check out RXtacy's build thread... the two of us managed to get his TD61 in a good spot with twin TiAL MVS's.... although... just like my LimeRock pipe, I wouldn't want to do a recirc.... fuck that... besides... I like open gates tickling the bowels of my ear drums.

What kind of sensors are you using? Mine are moujnted very close to the ports I'm pretty sure they're contacting the flame and they are pretty rock solid.... you could always take the hc approach and mount them in the dp

I would like more time as well... I won't be working on the FC for another 2 weeks....