Tuning the 5.5's

[DavidTD]

Round one tuning these monster injectors. Started today for fun and put a stock plate in. It was raining so I relied on road test for now not the dyno.

With stock plate, I had 42 psi max clean out the pipe. I figured about 350hp. Enough for maybe Andy, but not me. But I was still impressed when you figure it had a stock plate.

So put a mild cut on the plate, another AFC adjustment, 60 psi, clean and I am getting happy. I figure 450-480hp. :Thumbup:

The 3b is making 25 psi @ 60 psi total. I also raised the wastegate to open at 28 psi.

Next round, go back to 550hp with a little more aggresive plate design. Then hopefully be able to slide it to limit hp to this current level or put a valet type switch on it. But we will see.

And BTW, Fatboy is ready for the track. She's sitting at ~700hp ready for shake-down runs. :smoke:

[Billysgoat]

SMOKIN!!!!!

I was talking the Fatboy up this afternoon, hope it does good!

[Timbeaux38]

Are those 5.5's Jeffs new 370's?
Glad they are working out well.....

Now when will the shakedown for the fatboy be?

[TooMuchBoost]

Originally Posted by DavidTD

Round one tuning these monster injectors. Started today for fun and put a stock plate in. It was raining so I relied on road test for now not the dyno.

With stock plate, I had 42 psi max clean out the pipe. I figured about 350hp. Enough for maybe Andy, but not me. But I was still impressed when you figure it had a stock plate.

So put a mild cut on the plate, another AFC adjustment, 60 psi, clean and I am getting happy. I figure 450-480hp. :Thumbup:

The 3b is making 25 psi @ 60 psi total. I also raised the wastegate to open at 28 psi.

Next round, go back to 550hp with a little more aggresive plate design. Then hopefully be able to slide it to limit hp to this current level or put a valet type switch on it. But we will see.

And BTW, Fatboy is ready for the track. She's sitting at ~700hp ready for shake-down runs. :smoke:

Haha. It's all fun and games until I come down there and race you in the rain...we'll see what direction 500hp points you in.

[Timbeaux38]

There Andy goes again wth all that farfegnugen crap....
Come on back to the US anytime!

[DavidTD]

Originally Posted by Timbeaux38

Are those 5.5's Jeffs new 370's?
Glad they are working out well.....

Now when will the shakedown for the fatboy be?

Yes Tim, the 5.5's are Jeff's modded 370's. I really could have gone smaller injectors but these were there. :evil: Of course all in the name of testing. :blah:

I still may try a set of 5.0's after I play with these. Smaller but still good for way more power than I will make.

But best part is these drive so well. I can drive smoke free deep into the throttle. :Thumbup: Just need to limit some fuel so I make max power without the excess fuel I can't burn.

[nevrenufhp]

If you want to donate those 5.5's to a worthwile cause, I'll help you out :Thumbup:

[cowboyup20x]

I know I'm very happy with my injectors that Jeff got me. :smoke: :smoke: :evil:

[DavidTD]

Well, I still haven't put this thing on a dyno (man I wish I knew someone that had one :roflmao: ) but I took it to the track last night.

1st pass SOMEHOW I limped the tranny before I ever launched. 2nd gear launch, no lock-up, no OD. I was racing a lightning. :evil: I had the race until I ran out of gear, in fluid drive, and had to lift and let him go by. issed: 14.26 @ 85 mph. issed: issed:

2nd pass and I am racing a 350Z. Nice launch, tranny worked flawless, and I clicked off a 13.38 @ 99.78 mph. (1.83 sixty foot) Poor old Z had a nice view... of my tail gate. :roflmao: He ran a 14.88.

I was really pleased and surprised with the performance. My butt dyno said about 450-470hp and I was expecting about a 13.8 or so. Guess it needs calibrating.

Truck cleaned up by the 330 mark. So, overall I am pleased with these injectors. The EDM's I was testing last ran 12.80's at 105 mph with a wide open fuel pump. They cleaned up like these (I did have better air with the EDM's). But with Jeff's 5.5's, a boat load of pump taken away, 13.30's at almost 100 makes me very happy. After Atlanta I think I will see how hard it is to adjust fueling to put it back in the 12's. :smoke: