Duramax Diesels Forum Truck of the Week
  #136  
Old 10-19-2017, 05:26 AM
JRein JRein is offline
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Originally Posted by warriorcustoms View Post
Good Deal so with a Single Tune & SAC 45s its basically a Tow Tune on stock stuff But less pulse width...
My understanding is timing is also usually adjusted a little as well because of the design of the nozzles (there is a fuel bowl that isn't pressurized until the needle unseats) and the fact you need less negative torque (fuel injected before TDC).

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2004 LB7 2500HD 4X4 CCSB
Mods: LDS 63.5mm turbo, 45% SAC injectors, Built Allison, Mishimoto IC piping, EFI Live, Modded stock intake, Modded intake horn, Intake heater Deleted, Water separator/10 micron/Lift Pump, CAT Filter, 3" down pipe, MBRP 4", Incognito tie rods, High Idle, MA pump rub kit

Tunes by Idaho Rob
Trans Kit from Evan @ Limitless Diesel
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  #137  
Old 10-19-2017, 06:32 PM
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THEFERMANATOR THEFERMANATOR is offline
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Originally Posted by warriorcustoms View Post
Good Deal so with a Single Tune & SAC 45s its basically a Tow Tune on stock stuff But less pulse width...
A 90hp tune is about max for an lb7 with a stock allison if you don't like to limp it. A 5 speed can be limped with a 50hp tune if towing heavy(I've had a couple of people limp theres on one of my 50hp tunes).
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1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

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  #138  
Old 10-20-2017, 03:46 AM
warriorcustoms warriorcustoms is offline
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Quote:
Originally Posted by THEFERMANATOR View Post
A 90hp tune is about max for an lb7 with a stock allison if you don't like to limp it. A 5 speed can be limped with a 50hp tune if towing heavy(I've had a couple of people limp theres on one of my 50hp tunes).
Fermanator -
My LB7 will never have loads like intended in the 2500 HD Crew Cab it came from... That truck was prolly 9200lbs... The S10 Crew Cab ZR2 1ton solid axle Im buildin will weight right at 6000lbs Itll have a Dana 60 high pinion kingpin front & Military K30 14bolt with 4.56s & Detroit locker on 37in Baja BFGs... Thats pretty close to stock 3.73 gearing... Itll get used to tow a gooseneck stock trailer or an occasional trailer but never anything like Hot Shot drivin in a 2500 or 3500 Crew Cab!!!
And when Im ready Id like to send Ya My PCM for a single tune & IF Your 50hp tune has the same TQ as a 90hp tune thats what Im after
Itll eventually get a built trans with a 6sp conversion, Spade Tuner & 68ish mm turbo... Along with Delipped pistons & LBZ rods
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  #139  
Old 10-23-2017, 01:49 PM
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Brent@LDS Brent@LDS is offline
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Quote:
Originally Posted by warriorcustoms View Post
Good Deal so with a Single Tune & SAC 45s its basically a Tow Tune on stock stuff But less pulse width...
That is correct!
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  #140  
Old 11-11-2017, 06:41 AM
KillDevilDiesel KillDevilDiesel is offline
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Any more updates? Thanks so much for taking the time to provide the data, I know how time consuming it is. We actually just made a profile here to thank you for your data.
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  #141  
Old 12-14-2017, 02:01 AM
vtecjj vtecjj is offline
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Default LB7 Resurrection

Supd...Interested in SAC45's
My LB7 died April of 2017. I stayed on a bad (2nd set) of oem injectors for OVER A YEAR. Smoked like crazy, bad idle, bad mileage. When the oem injectors completely went out, I began to get a fuel knock...and drove almost 300miles back home! Suffice to say, I melted one glow plug tip (#6 cyl) and cracked that piston.

Fast forward to December (and several $$$ later) and I got another LB7 from a wrecking yard with 154K miles and have the following to install and tune:

Head Studs
Refreshened Heads
SAC 45's
LBZ CP3
AFE DFS 780
CAT Filter adapter @Filter Head
PPE: Up Pipes, Downpipe, Manifolds
HTT ProMax 64 Drop In Charger
EFI Live

(Tranny build coming in 2018)

A mechanic was hard pressed to stay with NEW OEM injectors, especially with filtration. But I decided to go with the SAC's instead.

Hope I made the right choice

This thread helps a lot! Any updates? Thanks!
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  #142  
Old 12-14-2017, 07:00 AM
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DAVe3283 DAVe3283 is offline
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Mine is still running great, though the truck is doing more short trips lately, and not racking up the miles like before. I'll update the full set of data next spring sometime. For now, my subjective opinion is the SAC injectors are still doing great. I still recommend them over the stock injectors.

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  #143  
Old 12-14-2017, 07:11 AM
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Brent@LDS Brent@LDS is offline
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We have sold a ton of the SAC45 injectors with all positive feedback and great results! We highly recommend them to our customers if they can afford them.
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  #144  
Old 05-10-2018, 11:21 AM
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dirty_maxxbob dirty_maxxbob is offline
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I have Exergy 45% SACís and mine are doing great even with the shity CA diesel. I have over 50k miles on mine. They are pretty quiet and are much more responsive then non SAC injectors. I put these in December of 2015 Since I cracked 2 stock injectors and Lenrenzo over at SoCal diesel swore up and down on these and now I know why. I have a FASS 150 and a Cat fuel filter in place of the stock fuel filter on the head. I try to clean my injectors every 6 months and the filters get changed every 15k miles. I use my truck to tow over weight studio trailers that are well over 15,000 pounds. I recently changed the filters and these where the balance rates on the edge, I know itís not a tech 2 but something is better then nothing if anyone has questions or is considering buying these and is hesitant feel free to PM me.




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  #145  
Old 05-27-2018, 09:48 PM
fl0w3n fl0w3n is offline
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Why do you say California diesel is shitty?


Also, at this point, has anyone heard of failing SAC style injectors?
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2002 LB7/ZF6 CCSB Sierra 4x4
340k miles
Stock...for now

Plans:
KP D60 front, ORD leafs front/rear, Twin Stick NP205, 4.56 gearing locked rear, PSC steering/hydro assist , 37"s on H1 wheels, Titan or Aerotank replacement

SAC45% Injectors, SB SD clutch, Kennedy pump and filter heads, S&B intake, ProFab up/down pipe, manifolds, Mild Tune from Rob
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  #146  
Old 07-24-2018, 06:08 PM
outtatimexx outtatimexx is offline
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Default Sac-Style injectors

Ok, I am almost sold on the sac injectors, but I have one more question before I pull the trigger on a set. I have been running stocks in my '02 cc Duramax for 10 years, and always felt I needed to add something to the fuel, I mean every tankful. Can I expect to be able to slow down on the cleaners, lubricants I have been adding all along? Or is it best to continue to add lubricants to every tank? I realize the LB7's were built before ULSD, Just wondering? Anybody have an idea?
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  #147  
Old 07-24-2018, 08:09 PM
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bigmackmiller bigmackmiller is offline
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I still try to run stanadyne, or optilube in mine every tank or every other
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  #148  
Old 07-24-2018, 08:39 PM
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I don't run any additives anymore, and haven't noticed any issues.

On the stock CP3 and injectors I would always run something, either Stanadyne or ashless two stroke oil. Since the build, no additives and no problems.

It shouldn't hurt anything to continue running a high quality additive, though.

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  #149  
Old 07-25-2018, 07:06 AM
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We have not seem any shorter life expectancy on the SAC injectors nor stock with people not running additives. Sure doesn't hurt to run some from time to time but its not mandatory.
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  #150  
Old 07-25-2018, 11:01 AM
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I ran ALL the additives and my stock ones still went at 70K miles. The set that was in it when I got it had 125K miles on them and never had additives run through them, and were still in ok shape. So with the SAC's I figure I'll just run biocide since it sits for long periods of time, and call it a day.
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1995 GMC 2500 SUBURBAN powered by 01 DURAMAX/ALLISON, little of this, a little of that,
DIAMONDEYE 4" exhaust, CORSA muffler, AFE stage 1 dry filter, custom tuning by me, KENNEDY single pump and pump rub kit.

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