The problem I'm having is that my exhaust manifold is glowing. I have a aba block, gti head, dual outlet manifold, big tb, no cat, and techtonics downpipe and exaust. I have just recently did the engine swap and never noticed this problem before. The car is running perfect, no hessitation, stalling, loss of power, nothing. But, the exhaust manifold glows after driving the car. it only glows in the 2 and 3 cylinder area. The injectors seem to spray good and don't leak. I even swapped the 1 and 2 injector and the 3 and 4 injector, but it still glowed from the 2 and 3 area. I put on a different fuel distributor, but still the same problem. I've tried to richen and lean out the mixture, but it still glows. I don't have a way to check the fuel pressure, so I don't know if its high or low and it still has the original differential pressure regulator, which could possibly be the problem. i just don't understand why its just in the 2 and 3 area and not all 4 cyliders if it was running rich or lean. I'm just affraid if I drive it around like this too long that I might burn up an exhaust valve or something, if it hasn't already happened. If anyone has had a similar problem or can give me any suggestions of what to try or check, it would be greatly appriciated.