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FASS, SPS 66 Turbo Upgrades & Quest for 13s

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Arggg. 299 code and limp mode

Wondering if I made a big mistake

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Michael at HotRodDiesels.com finished my FASS w/Fuel Pressure gauge and Super Phat Shaft 66 turbo upgrades last week. He lost my kitty in the process, poor kitty. I am getting close to my low 13s 1/4 mile goal. I am now claiming a 13s 1/4 mile truck, just not as low as I am going. Best 1/8 mile track time Friday at Houston Motorsports Park was 1. 961 60', 8. 791 1/8 @ 79. 79mph. Best 1/4 mile track time at Houston Raceway Park Sunday was 1. 983 60', 8. 827 1/8 @ 80. 29mph, 13. 904 1/4 @ 97. 30mph. Out of Sunday's runs, 4 were in the 13. 9 range and the rest were in the 14. 0 range.



I should have waited until it cooled off Sunday, I ran between 5:30 and 7:00. The temp was close to 100 and muggy as it gets on the gulf coast. So much for the excuses. I am still trying to get the optimum 4wd/boost launch figured out. Seems torque management wont let me just bring up the boost I want. I also think I am hitting the rev/some limit in the middle of 3rd gear. It pulls Gs up to that point and then just levels off and kind of stays that way through OD.



The FASS system is great 18psi fuel pressure at idle, pulls down to 13 at WOT as slowly eases back to about 15psi. I have saw people complaining about how loud they are, but mine cannot be heard except when you turn the key on before you start. The install is fantastic. Mounted so that it is not visible unless you look under the truck. I will get some pics of new mods soon.



The Super Phat Shaft 66 is awesome. There is a little more lag than stock, not a lot. Once I get to 12-15psi with some fuel it lights. Goes straight to 45psi and stays about there. The most amazing part is I have not seen EGTs over 1290* on any WOT 1/4 run. This is with HOT Juice on 180hp/Low Boost Fueling on 5 and EZ on level 3 and a FASS. I could hit 1550* easy with a fuel pressure box only on stock turbo.



Here are the mods over the last 9 months:



What HotRodDiesels has done:

Full guages(Pyros(2), Boost, Trans Temp, Fuel Pressure).

Complete TC/Transmission upgraded for racing including billet shafts.

FASS fuel system.

Super Phat Shaft 66 Turbo and matching 4" down pipe all the way to the Banks Monster muffler.

Lots of tuning/tweaking, baby sitting me and hours of help putting a plan together.



What I could do:

AFE Stage I w/Torque Tube.

Bansk Monster 4" Cat Back exhaust.

Edge HOT Juice/Attitude.

Edge EZ stacked.



Michael at HRD is planning some tweaking on various things. Probably going to switch to a tighter Torque Converter. I have the Bully Dog Triple Dog in the back seat. As soon as the Crazy Larry program is available to update on the Internet I will be loading that program and see what that and the EZ stacked will do. Maybe even try a Little HOT Juice triple stack. I have to learn what the torque management system is really doing and how I can compensate.



I am pretty sure that some new injectors and ARP studs are right around the corner. Maybe I need to set the goal a little lower and shoot for 12s with a single turbo and #2. I started with 7400lbs stock truck at 16. 87s 1/4 mile. Lost around 4 seconds so far, only need to loose one more second. Of course when all else fails I have drugs to fall back on.



The "Quest" continues and with the help of Michael @ www.hotroddiesels.com I am confident that I will be there before too long. Thanks Michael for all the help and extra attention to detail. Thanks to his wife for all the lost weekends.
 
Great to hear your having fun. I just got a sps66 installed a few days ago, and have finally put a few hundred break-in miles on the truck. Im curious have you tried a 1/4mi with some shorter tires?
 
RMalone,



No on the tires, I have a set of 5 stock alloy wheels in the garage. When I get real serious about winning races, I figured I would buy a set of stock diameter street slicks. Of course it is not traction that they will help, but will help gearing.
 
out of shear curiosity (I'm not a 1/4 mile racer) do you take off in 4wd and shift back to 2wd somewhere down the line, or leave it in 4wd the whole time? I would think that hitting 90mph would be risky on front half of the drivetrain?
 
I am leaving it in 4wd all the way. Shift out after slow down before turn. It was very scary the first few times I launched in 4wd, all kinds of DW images came to mind. Seems if you shift out in 2nd as some have said, you still have to let up on acceleration enough for the front to release. Seems most of the posts to my question about the same thing just leave it in 4wd all the way. I am close to 100mph now and you had to remind me LOL. I think I will go throw up now.
 
Do you have a manual transfer case or the electric transfer case? I know on the manual you can pop it out of 4x4 after 1st to 2nd shift and be good to go.
 
I do have the manual 4x4 shifter. I also have a lockup button, it is a push and hold right now. I would have to change to different lockup switch and mount to the 4x4 shifter to be able to do both after shift to 2nd without another hand. I will try it next time out and see what it does. Seems like there would be more potential to nuke something shifting the transfer case at WOT and 1000lbs of torque.
 
I agree, it seems like one little thing not disengaging properly could nuke-fry gears and what ever else is in the way. That transfer case sits almost right under your backside too. :eek: :eek:
 
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