I know it's kinda an oxymoron as our prechambers seem to severely hamper performance mods. I own both an auto 4D56 and a new to me 4M40 5speed, I have done quite a bit to my 2.5 including turbo upgrade, front mount IC, 3" exhaust, tweaked pump (timing and pressure) modified intake manifold.... I haven't bothered to dyno it as it is an auto turning 35x12.5s. These made a decent improvement in power causing me to want a 2.8 and a five speed. Now that I have finally aquired one I'm going to start my build and document some of it on here, so in a couple weeks once I get it through all the inspections I'll throw it on the dyno and give a baseline and begin the mods.

If anyone is wondering, I've been beating on my Paj for more than two years now running between 25 and 30psi with no apparent problems, much tougher than the equivelant toyota diesel. Obviously I keep an eye on the EGTs and do the regular maintenance.

My other plans for the Paj are a SAS with coilovers, but I'll probably not start that for a couple months although I have the parts, I just need to fix up my old Paj to sell, need moneys.