straight piped my TDI and milage dropped 150Km

[Kor]

Re: straight piped my TDI and milage dropped 150Km

Damn dude I don't shift my 1.8t that high most of the time! With the monster torque you TDI guys have I can't see much cause to shift past about 2200

Redline every time!

[albertaTDI]

Re: straight piped my TDI and milage dropped 150Km

I appeciate everyones input,but are there anymore TDI drivers or Mechanics (dave) that might have some more input on why my millage took such a sudden drop, because my driving style did not change . so we can rule that out

[Boy Racer]

Re: straight piped my TDI and milage dropped 150Km

Kris has a point, but there are things that affect efficiency in a diesel. Firstly it is very unlikely to be your straight pipe. Ignore any thoughts of losing back pressure causing loss of torque, this is a VNT turbo.

Things that I can think of that would affect efficiency in a big way would be compression (a tiny change here will make a big difference), fuel injection characteristics (timing, length of window, spray pattern, pressure), running way too rich, a real restriction in the intake (snow screen/ soot) or boost leak, sensor error.

Assuming you dont have a flat tire or something

[B5]

Re: straight piped my TDI and milage dropped 150Km

Did you check your intake?

[NeonGTI]

Re: straight piped my TDI and milage dropped 150Km

Redline every time!

Ah, you have seen me drive! I didn't think we met.

[albertaTDI]

Re: straight piped my TDI and milage dropped 150Km

I have not checked to see if my intake is clogged yet, I only have 26000km on the car and it was such a sudden drop in mileage like one day it was good next day it was bad

[Stonewall]

Re: straight piped my TDI and milage dropped 150Km

I have not checked to see if my intake is clogged yet, I only have 26000km on the car and it was such a sudden drop in mileage like one day it was good next day it was bad

A huge leaf/garbage in the snow screen can cause loose of power and milage.

[gtx]

Re: straight piped my TDI and milage dropped 150Km

Kris has a point, but there are things that affect efficiency in a diesel. Firstly it is very unlikely to be your straight pipe. Ignore any thoughts of losing back pressure causing loss of torque, this is a VNT turbo.

Things that I can think of that would affect efficiency in a big way would be compression (a tiny change here will make a big difference), fuel injection characteristics (timing, length of window, spray pattern, pressure), running way too rich, a real restriction in the intake (snow screen/ soot) or boost leak, sensor error.

Assuming you dont have a flat tire or something

did you try a diffrent gas station,one that serves a lot of diesel some are
still running winter grade which sucks for mileage when the weather gets hot..