These new headers were a PIA to fit!!! lol
Mainly access to the bolts on the exhaust manifolds. But, after much cursing, sweating, many coffees, doing housework, fixing other stuff going to a 1st birthday party, they are in.
All set and ready to go;
Out with the old;
In with the new;
OEM and Aftermarket side by side;
In terms of the drive, there is a definate increase in mid range punch, I'll have to see how economy goes now with the headers and the flashed ECU, got a full tank to go through.
Plus I must of had a small exhaust leak or something as the car now idles smoother and is quieter!!
The weight difference between the OEM header and the HM is very noticeable. Just from feel, the OEM headers weighs the same as 2 HM headers and the OEM connecting pipe is about twice as heavy as the HM version.
It really does like to rev now, mid range has definately improved. Have to keep an eye on the Speedo now caught myself over the limit a few times. That's how much difference its made, well to me anyway.
I would now like to see what it does down the 1/4