Here's a few vids of soft (10ish psi boost) 4X4 launches in my shop project I'm getting ready for next race season. It's fuel only now, with a lot of tuning to do, and bugs to work out still, as well as add a roll bar, but so far, so good. By then, I might get actual race tires, but don't hold me do it
Thanks. it's balanced, with roughly 15:1 compression, and a stg 3 cam, so it's surprisingly quiet until it's fully lit, even then, it's not that loud. It's got quite the haze during warm-up with the low compression though.
turbos are 66 mm compressor with .58 A/R turbine housing as the high pressure unit, big one has an 82 mm precision compressor wheel with I believe a .94 a/r turbine housing. First gate opens just as soon as large turbo builds boost, bypassing the high pressure turbo, and into the low pressure unit. Once peak back pressure is achieved, everything beyond that gets dumped past both turbos into the downpipe. This truck does have my hand built intake runners, and heavily ported heads too.