GKR Performance Blog & How to's

  Dual purpose boost gauge features boost pressure and exhaust manifold pressure. allows you to monitor both on one gauge and simultaneously. 

  This is the kind of smoke you get when your injectors and/or glow plugs need attention. In this particular case it is injectors. One of them slowly drains and drips overnight causing it to miss slightly upon initial startup. Please don't confuse this with burning oil.

  For those wanting an oem fit intercooler for e90 & e87 1 series 2.0d M47 motors.. This is how to get the mtec 335d intercooler to fit. The intake manifold side is a 330/335d boost pipe with a reducing elbow. And the other side at the bottom is the 335d boost pipe connector and another reducing elbow

  Easy to spot here but this is how you check for cracks in stainless manifolds on the m57n motor!

  For those of you that want to tackle the swirl flaps yourselves here's a few tips. Firstly we use glass reinforced plastic swirl blanks because that is what the manifold is made from so it will have the same expansion rate with heat as the manifold itself. Secondly everything has to be perfectly clean, dry and free of oil before reassembly. All mating surfaces and gaskets! An example of how clean I like to get them is pictured. The gaskets are a good idea to replace at the same time. Make sure you use ones with double lip seals on them (picture) and that they protrude from the manifold enough to make a seal. The blanks themselves must have viton or nitrile rubber o-rings that can resist oil so that they last a long time without deteriorating. Normal rubber o-rings won't last at all. I won't go into details on how to get the manifold off and back on there are plenty of guides online for that. Just make sure all the orange bolt holders are there. If any are missing when you...

  Some people find it difficult to differentiate between boost you see on a gauge.. And boost you see on the engine map and live data. So below is a brief description on how it all works... Difference Between Gauge and Absolute Pressure Measurement. Pressure can be described as the force applied to an area. ... The simplest way to explain the difference between the two is that absolute pressure uses absolute zero as its zero point, while gauge pressure uses atmospheric pressure as its zero point. So basically your engine ecu counts atmospheric pressure AND boost above that which you would see on a gauge. So for example if you want 2.5 bar of boost... You have to include around 1000 millibars or 1 bar of boost for atmospheric pressure on top of that. So to see 2.5 bar on a gauge you set 3.5 bar on the engine map. Just to clear it up for those of you who find it difficult to understand