DeXteR wrote:Good work on getting that vent more flow friendly.
Give Broc and internet high-5 for me.
Many high fives have been given.
I will give a little update, sans pictures.
Spent some time working over the tune last night. In doing so I have discovered 2 worrying new problems. One will need to be rectified before competing in the car, the second can wait.
First off, braking issues. Due to the lack of a plenum post throttle body, there is no place to pull a 1/2 inch line for the power brake booster. To rectify this, I T'd off all 4 throttle bodies, and linked to the booster. For normal driving, this worked perfectly. They wouldn't build vacuum in the booster as fast as a stock system, but with the check valve I didn't notice any issues. Once I started opening the throttle hard, and alternating onto the brakes, like I would while transitioning between turns, I would loose boost very quickly. This is a major problem. Time to get fancy.
The ideal way to solve this issue, would be to convert to manual brakes, which is the plan. There just isn't time before OFR. Let the Finn rigging begin.
The second problem. With the tune coming together, the car was pulling harder and harder. Everything was fine and dandy until one of my warning lights began to illuminate. Second and Third gear, around a hundred RPM before the shift light turns on (6500), I get an orange warning. I preset that light to activate when injector duty cycle hits 90%. Checking the laptop revealed that at 7000 RPM, I was getting to 92% duty cycle.
What to do? Well, I am not happy about that kind of DC. Extended time spent at 90+ can and will shorten the injectors life. If I were to swap to a hotter set of cams, I might very well push to 100%. I may experiment with mixtures of E85 and high octane, or I could just swap to race fuel, all though I don't want to. I am blown away that This motor is sucking enough air to nearly max out 565 cc injectors.
On high octane, these injectors allow an STI to make 300ish WHP. This means, with the 30ish% increase due to E85, maxing out these injectors should put me over 200 horsepower to the rear wheels. These are just armchair calculations, but I know I am in the neighborhood. I can't wait to get it on the Dyno after OFR to find out for real.
Dave, are you ready to duke it out for highest HP NA KA on pump gas? E85 comes from a pump right?
Either way, the car pulls silly hard on gravel now. Its whole different animal then ever before. She scares me a little.