Engine dyno was done with 65lb FAST injectors and we just had enough fuel.

My engine tuner recommended the newly released high-impedance Siemens-Deka 80lb. They flow 80lb/hr @ 43psi and are controllable at low pulse widths which allows you to use a larger injector than normal without hurting idle and low speed driveability. The high-impedance; makes them compatible with most ECU's..

 

Mine is tuned/dyno'd at 60psi and I made just a little more than you with 42s, same as my Racetronics pump puts out. In fact with the gage I have it pushes upwards of 63-65psi and seemed to drop close to 61psi at 6800 rpm. Why would you only have 43psi. Smaller injectors usually have the best idle as you have more scalability at a low demand. Bigger injectors have bigger jumps between the adjustments. I do agree it is not good to be too close to maximum either, which I might be bordering on with my bigger headers I added. It should show up pretty quick on the chassis dyno though and Racetronics is not far from the dyno I will be on.

All is good though, just curious why 65s would be too small, if you calculate it, they are good to 980 hp at 80% duty cycle.

I used this calculator and assumed 60psi are your pressure. look about near the bottom of the page. It is pretty accurate, I entered 90%, 61 psi, 705 hp and it gets 41.34 psi injector required, so it is nearly spot on.

http://www.rceng.com/technical.aspx

I hope it brings you better results, but I thought it sounded like you had a great idle.

 

Exhaust is installation complete.







Vacuum Tank for the Silent Choice Exhaust Note (Police and Neighbor Friendly)

 

Hey Mike,

Very nice build!

I know you're anxious to get the wheel numbers but here's my mild little 427 on a Superflo engine dyno for comparison. On a DJ there numbers are in my sig. Both are C5's so the drivetrain loss should be comparable. I run LG's Big 3 catback. Peak HP on the Superflo was 656 and 610 torque.

Kevin

 

Nice numbers Kevin...this gives me an idea of what to expect. I will be posting the chassis dyno numbers soon.

Do you have any pics of our car?

 

Nicely done build. Ready for chassis dyno numbers.

 

I added the chin spoiler this winter. No pics yet.

Corbeau A4's and leather interior. I was just fitting it here. The HVAC is now mounted - LOL



Money Shot!

 

Sweet Ride. You've obviously invested big bucks into this car!!!

Looks great!

 

LOL - My daughters were complaining a while ago that I was spending my retirement on the car...I told them "Not so, I'm spending your inheritance"

 

LMAO

Kurt

 

Amazing build man the setup will be freaking fun to driver lots of mid range Toooooorque

Get us lots of vids..







Great looking car/setup.
Where did you get the leather interior parts?

 

PM sent

 

That is one nice looking car and amazing engine build!!!

Chris

 

Thanks.

 

Any numbers from the chassis dyno?