Quote:
Originally Posted by polaris9898
I have an 06 jetta tdi. I have increased the tire pressure in my car. The car is out of warranty now and I'm trying to understand a few things.
|
Having a larger IC would be good, but the gains from replacing an existing intercooler with a larger one are much smaller than from adding one to a non-IC engine.
IF you are going to do it anyway, then instead of replacing, plumb it parallel to the first - this will give you the best cooling and the biggest drop in pumping resistance, but still not worth it, neither price-wise, nor space-wise, nor weight-wise.
Improving your exhaust may give you better FE (
Our Peugeot Diesel - Part 1 - The Exhaust), but then again it may not (
New Muffler = Lost MPG's). A free flowing intake is good, as long as it's cheap and easy (
1.9L VW/Audi/Skoda/SEAT Diesel Mod alert! 
)
And an upper grille block is a must if you are going to be driving a turbodiesel efficiently. In my case, the engine never really got up to temp, even with a lower grille block, until I
covered the upper grille and put some
thermal insulation on the engine.