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August 23, 2005 BlackTrax Custom Built 515HP K24/K20 GT35R Hybrid RSX - Trip to Hondata

NEW! 12/14/05 613HP UPDATE! The story, pictures and the dyno, Click Here!

After two weeks of non-stop work and a total of eight months on this entire project, we barely made it to LA to meet up with Doug MacMillan from Hondata. Doug offered to tune our car at no cost for R&D purposes for which we are forever grateful. Pete sat in the car with the engine runing for 4hrs on the trailer while we were towing, so we can put some more break in time for the motor, check for leaks & monitor the guages.

Once we got there at 9am, we strapped the car on the dyno and had Doug do his magic. Low cam pulls were resulting in high 250hp+ dyno plots. As we kicked in the high cam we hit 450hp on 91 octane and 515 with 109 octane (no changes in tuning). After about 6hrs of back to back runs, we were ready to turn on the boost controller. On the first pass, with the controller on, the clutch slipped right when we hit peak boost of 4000rpms at 20psi.

Disappointed we had to end the dyno session early at 6pm. In the 9hrs of dynotuning Doug was very impressed on how stable K-pro was in controlling the custom RC 1200cc injectors. Also, with vtec set at 3300rpms, Doug said, "This is the lowest I've ever set vtec on any car." His comments led us to conclude that the motor, head porting, turbo manifold, downpipe and turbo are running extremely efficient.




The last dyno before the clutch slip plotted 515hp and 321tq. We did however reach over 330tq on the previous run. As you can see between 3500 and 4500rpms, torque shoots up by about 100 ft-lbs. It was at that point where the clutch couldn't hold on. Also you can see that at 8500rpms the hp curve is still increasing. Doug is confident that this motor will rev higher and will exceed our 600hp goal. Up to 6000rpms, the boost was at 10psi. With the ECS open, the turbo would gradually spike to 20psi at 8500rpm. We know that with a new clutch and boost control, we will move the torque and hp curve to the left, generating more power and torque along the midrange rpms... and we still have yet to turn on the Methanol injection! Check back with us soon on another update.