Just wondering if anyone local has had a chance to either test this turbo or is currently running it? It has really peaked my interest and wouldn't mind a chance to take a ride in a car that is using one, or get some feedback from someone who has at least tested it out/tuned for it. Thanks!
Pretty nice turbo for the money. Ran it on an sti with a perrin fmic and dw850cc injectors. Stock spool and holds power up top. Power plateaus around 6k but holds till redline. Running 24ish psi peak and 19psi at redline. On a cool day it made 370whp/390wtq peak and on a hot day it made 335whp/370wtq peak on airboy's road dyno. Area under curve is HUGE! Hopefully Nuke or Bullwinkle will chime in with their impressions and how it compares to various 18g/20g setups they've tuned. I'd definitely recoomend it to anyone considering a 16/18/small 20g on a 2.5L. Mine will likely go on Carl's rally car or the gf's lgt next. Here's a graph from a cool, dry day. expect a similar curve with lower peak numbers on hot days:
Wow, that seems high. Most of the research I have done suggests its good for at most 350hp, but its going to average on most dyno's right around 300-320ish whp. I am not to familiar with Airboy's road dyno....does it tend to read high or?
No phone service till next week. pm me. Like any dyno number, take the peak numbers with a grain of salt. Look at the area under the curve. I think Bullwinkle has an overlay with my stage 2 tune (same mods except hta68, 850 injectors, and silicon turbo inlet). That tells a much better story. Also, boost vs rpm logging is pretty hilarious. This turbo likes to make a ton of boost really fast... holds it very well too. I'm sure once tuners get more aggressive with boost settings with this turbo (especially with a 2.5L), we'll start to see more and more impressive results.
Yeah, those number Sheen posted are quite high (sounds like that run was done on a fairly cold and dry day). Most of the runs put down around 325-330 WHP, which is exactly what I would expect. That road dyno puts down numbers close to a Mustang dyno. I'd say the HTA68 is a great "powerband" turbo for the 2.5L. It's been shown to be a bit laggy on the 2.0L cars (compared to a regular or evo 3 16g). On the 2.5L, I'd say spool is about the same (or better!) then the VF39, and power is between a large 18g and 20g turbo. Pretty good bang for your buck, as long as you're not focused on "big HP." Anytime you can increase topend HP by ~40-50 WHP and not lose any low end spool is impressive.
thanks. that is pretty reasonable compared to the other turbos they offer. still a good chunk of cash.