I don't have any dyno numbers but I went 10.31@133 weighing around 3800 with the 67mm. I can't remember how much boost I was running but the turbo had no more to give.
The stock mufflers are not a big restriction. A few years back I did a comparison with and without the stock mufflers and the difference was about 6rwhp loss with the mufflers installed. I don't have the graph but the loss was at peak hp. I do not have cats but the stock ones sound good with...
The compression is just over 10
As for the gap I don't have any idle issues but once again every car will react a bit differently to changes.
The plug looks very clean with the Ethanol. I have not ever seen any signs of detonation even with the old engine.
I am using the HTO's still
I am running 15 degrees at WOT currently. I put a big bore stock stroke engine in in the spring and have kept the timing down as I increased the compression with this engine. With the old .020 over stroked engine I ran as much as 17 degrees at peak torque and...
Pete,
I have my plugs gapped at .020 and don't have any spark issues but not all cars are alike. If I run the A/F below 10.8 or so I get blowout but in the 11's it is happy. I have run up to 28psi without any blowout issues. I recently thought I had blowout issues but my wide band sensor was...
PowerHouse has done quite a few but he is almost five hours from you. Not sure if he is too far or not. Give him a call, I am sure he could turn it around in a day or two if he has all the parts.
I have no personal experience with Lasota but everything I have heard about him has been good. He actually tunes behind the scenes at some performance shops in his area.