LMM: [email protected] to do now

[VeeAte]

Ran my best time last night of a 12.13@112 with a 1.79 60'. I have been playing with my tune bumping the pw up like 4% from 95mm3 to 120, and from 100 mpa to 180 but the truck will lose 1mph everytime, maybe i am missing something? Trying to squeeze 1-2 mph out of it with my current setup. And im thinking of a straight centerlink to get my 60' down to low 1.7 high 1.6s, I'd really like to hit 11.9 before i spray it:angel:.

 

[Righteyeblind]

Did you add timing along with increasing the Us? That is where I usually gain my MPH from is adding pulse and timing. Unless your truck isn't holding rail and everytime you go up its dropping more and more rail psi which will make it slower. More fuel doesnt always mean faster.
Did you log your runs?

 

[VeeAte]

Yea i added .8* which put the max at 30*, but im not hitting that. Rail pressure is falling to around 24k. Ill have to check the log again but i believe max timing around 28*

 

[Subman]

60' is really slow, what boost are you leaving at? Are you spinning bad? What kind of tires, what have you done to the rear suspension? I let Idaho Rob do my tuning so I'm no help there. Maybe be time for a set of dual fuelers, shouldn't loose rail pressure with that setup.

 

[paint94979]

DROP RAIL PRESSURE!!!... a 4094 stopped making power on my truck past 3200 pw on stock injectors.

 

[Burn Down]

He has a Billet 366 now and 60 overs...

 

[VeeAte]

60' is really slow, what boost are you leaving at? Are you spinning bad? What kind of tires, what have you done to the rear suspension? I let Idaho Rob do my tuning so I'm no help there. Maybe be time for a set of dual fuelers, shouldn't loose rail pressure with that setup.

285/55/20 terra grapplers, made some traction bars, 32psi front/27psi rear...im really thinking of doing dual cp3s...i got my stock pump sittin in my room just need to get the bracket/lines and stuff.

DROP RAIL PRESSURE!!!... a 4094 stopped making power on my truck past 3200 pw on stock injectors.

Yea im not running a 4094 anymore a billet s366/73 .91, 60% over exergy lbz injectors, wicked stage 3 cp3

 

[gmduramax]

Ran my best time last night of a 12.13@112 with a 1.79 60'. I have been playing with my tune bumping the pw up like 4% from 95mm3 to 120, and from 100 mpa to 180 but the truck will lose 1mph everytime, maybe i am missing something? Trying to squeeze 1-2 mph out of it with my current setup. And im thinking of a straight centerlink to get my 60' down to low 1.7 high 1.6s, I'd really like to hit 11.9 before i spray it:angel:.

How much pulse width are you running?
Your 60 is slow

 

[VeeAte]

How much pulse width are you running?
Your 60 is slow

2360..if i try and launch really hard the front end gets funny.

 

[gmduramax]

2360..if i try and launch really hard the front end gets funny.

I think that's too much pulse for the mph your running. Is your rail pressure holding?
What tires do you run? On my stock tires with 2 inch drop shackles and my springs clamped I would cut consistent 1.69's

 

[VeeAte]

I think that's too much pulse for the mph your running. Is your rail pressure holding?
What tires do you run? On my stock tires with 2 inch drop shackles and my springs clamped I would cut consistent 1.69's

Yea my rail pressure is holding at 2360...when i bump it to 2450+ it starts to fall to 23-24k, and i run 285/55/20 terra grapplers

 

[TrentNell]

Yea my rail pressure is holding at 2360...when i bump it to 2450+ it starts to fall to 23-24k, and i run 285/55/20 terra grapplers

most LBZ/LMM trucks i have tuned like to stay above 25k , sounds like you pretty close where your at , I doubt you will get more MPH with out adding more fuel ( dual CP3's ) , with more air you could get some more MPH but on the smaller turbo's to make big power it takes alot more fuel than if you have a bigger turbo setup , it should be good for 11.8's if you can get it to hook better and launch harder. what does the truck weigh ?

 

[VeeAte]

truck weighs 6920lbs...i guess ill have to add another cp3 then, just need the mounting hardware. I may also add a billet s483 under my billet 66 if im looking for more. Not sure how fast i can run on the 66 dual cp3s and spray.

 

[Kat]

Congrats on the new best :thumb:

 

[Iceman56]

How do you like the billet S366 compared to the 4094VVT? (spool up, driveability, power)

I cant believe your draining the rail with your modded pump, is the turbo cleaning the fuel up?

 

[VeeAte]

How do you like the billet S366 compared to the 4094VVT? (spool up, driveability, power)

I cant believe your draining the rail with your modded pump, is the turbo cleaning the fuel up?

I love the s366...it spools faster than my 4094 did no issues at all daily driving it. Just swapping the turbos and not changing anything in the tuning I picked up 2mph and dropped 2 tenths in the 1/4. On my 2360pw tune the rp is holding 25k but if i bump it up anymore the rp starts falling to 23-24k

 

[sweetdiesel]

I would work on launching harder and suspension.....Dropping weight is free

 

[VeeAte]

Congrats on the new best :thumb:

Thanks kat! How do I get those fancy 600hp 100k and 12sec badges lol

 

[Noreaster]

How do I get those fancy 600hp 100k and 12sec badges lol

post a pic of a dyno sheet, your odometer & slip from the track in your garage

 

[DMAXchris]

Congrats on the new best time! :thumb:

My suggestion is stop throwing parts at the truck for more power and work on setup. Get that 60' down in the 1.6x and you'll be well into the 11s. Get some adjustable shocks, sticky tires on PYOs, drop as much weight as possible and play with tire pressures. Also, consider lowering pulsewidth until it holds 26k the entire way down the track. Pressure is more important than pulse. Good luck.