MAF sensor

[earlbrown]

Perhaps I have mine clocked at 90 with the wires facing down....


..I really need to open my hood again and finish tuning my car...   

[TexasT]

I got back under the hood last night. Changed out the O2 sensor and taped off the end of the tube at the maf connector. Didn't look like I was rubbing on the hood pad. When I get the turbo to tube coupling and clamps ill see what I can do with the earl brown suggestion.

Over all running better. Pulls hard. Haven't goofed with the boost yet as it is hot. Been studying up on alcohol injection. Gotta get the a/c going before that. Got out the vac pump but couldn't find the gauges. I'll keep looking. I'm always digging for something.

[TexasT]

All right. This tank of gas picked up an additional 2-2.5 mpg so between the maf and the O2 and the O2 was only in part of the tank I'm hoping to get another .5-1 mpg gain on this next tank to get us up to 19-20 mpg. I feel that is pretty good for a cool guy car. Haha

I found the gauges but that's in a different thread.

[TexasT]

all righty then. I came on a situation today where we were discussing the need to decrease fuel and this particular unit has fuel pressure in the 47-48psi range. The tt chip already has 20% out and still seems rich. So it was suggested that one might use the translator feature to lessen the fuel and was decided to drop it 6%. But I wondered what is lessened 6%. It obviously doesn't control pressure. Is it the duty cycle that gets trimmed back?

TIA

[Scoobum]

I'm assuming you pulled 20 percent fuel from low gear. Fuel pressure line off should be as per Erics instructions. I don't make any fueling adjustments till I know what my 02's are on the default settings at WOT at the 1-2 and 2-3 shift points...and at the traps.

[Scoobum]

Check the tuning notes.


http://turbotweak.com/translatorinstructions.pdf

[TexasT]

The unit we were discussing has a fancy new dw300 pump and the lowest it could go was to 47psi with vac hose off. Even with the chip adjustment 20% out the O2 was over 800 wit on the run so we believe I to be rich. So it was decided to pull 6%ore fuel out with the translator. I was just wondering what it was pulling 6% out of. I was guessing it was the injector cycle.


Also contemplated was drilling out the return fittings to try to lower the base pressure but the owner decided to try the translator and see how that works out.

[Steve Wood]

The chip probably controls the duty cycle but the Translator probably gimmicks the maf reading

[motorhead]

Gimmick is right, Steve.

[daveismissing]

Also contemplated was drilling out the return fittings to try to lower the base pressure but the owner decided to try the translator and see how that works out.

The right way to do it.

[good2win22]

Not sure of the financial situation but I like the Racetronix kit.  -8 feed, -6 return braided line with sender, adapter fittings for stock fuel rail and inline filter. Have you guys ever looked inside of the stock fuel lines?

[Just a Six?]

The old "drill out the return line fitting" trick has been around a long time. Don't remember if I read it on GNTTYPE or one of the old monthly mags from maybe Kenne Bell?

[TexasT]

Drilling out the stuff was way before the interwebz. I drilled out the tank sender when I put the red armstrong pump in. Not because it had too much pressure but to maximize flow.

[Just a Six?]

I think Earl did a write up on TBS years ago about that trick but it's also been around a long time.

[earlbrown]

Yeah, it was the ''hot to put in a fuel pump'' article where I showed the size decrease.  It was right out .100" in diameter chocked off.  Flow area was right at 1/2 if memory serves.