Duramax Diesels Forum Truck of the Week
  #106  
Old 07-26-2017, 02:58 PM
Daboot162 Daboot162 is online now
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Originally Posted by Brent@LDS View Post
If your looking for an injector that will hold up and last a long time check out our SAC 45% option here. We have had great results with them and have sold a ton of them! Let me know if I can help.


If I am able to make the purchase, you guys will be the first to know! Thanks
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  #107  
Old 08-16-2017, 12:56 PM
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In the process of putting in 65% SAC's hope to have it done tonight, excited to see the results, will be going in for a retune the 29th
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  #108  
Old 08-16-2017, 03:42 PM
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The SAC injectors do a lot better with a tune for them. They can take some tweaking to get the idle back where it should be and to prevent the throttle from being too much on/off. THEFERMANATOR has written a good bit about how he tuned his in this thread.
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  #109  
Old 08-17-2017, 06:04 AM
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Before and after


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  #110  
Old 08-17-2017, 08:50 PM
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What I've found is the sac nozzle NEEDS timing. With that sac pocket in the nozzle, you get a slight delay before the injection begins vs a vco nozzle. Adding timing to both main and pilot(like GM did in the lly) made a HUGE difference. I still need to redo my fuel tables as I have found there is some areas of the fuel table where it's really close, and other areas it is WAY off. The one thing I've found is the lower mm3 of fuel amounts need to be reduced quite a bit, but the normal idle area(7-9mm3) is pretty close with my 45's. And I've also found once you get around 80-100 mpa of pressure, the flow changes flatten out, but in the lower pressures you actually need to add fuel to bring it all in line. I know most are ramping pressure way up to try and steady the fueling and clean them up, but I'm running stock pressure with no issues after reducing the pilot quantity and adding timing. Tuning them has gone against alot of what I've learned from tuning trucks with stock style injectors.
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  #111  
Old 10-11-2017, 11:41 AM
warriorcustoms warriorcustoms is offline
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Bump for any Updates...
This thread & a few other guys have pretty much talked Me into SAC 45s & givin the LB7 a chance instead of doin the LLY Topend swap!!! So I guess this will be the route I take when I get the 146k Dmax & Allison stuffed into My Crew Cab build
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  #112  
Old 10-12-2017, 06:33 AM
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We have been seeing nothing but positive feedback on the SAC injectors! You will not be disappointed with your choice.
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  #113  
Old 10-12-2017, 07:22 AM
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Quote:
Originally Posted by Brent@LDS View Post
We have been seeing nothing but positive feedback on the SAC injectors! You will not be disappointed with your choice.
Just installed mine over the Columbus day weekend. Truck is a beast now and has never ran smoother! Thanks Brent!

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04 lb7 CC/SB dsp5 EFI live by Bob Olsen, big head waste gate actuator, air raid intake, air dog 100, high flow driver side exhaust manifold, 3" profab downpipe, 5" MBRP exhaust sac 45% over sticks, WCF 3" y bridge, ported intake horn, ati dampner, lbz cp3, cat filter head/filter.
piece by piece!
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  #114  
Old 10-12-2017, 10:15 AM
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Quote:
Originally Posted by Brent@LDS View Post
We have been seeing nothing but positive feedback on the SAC injectors! You will not be disappointed with your choice.
Installed mine March/April time frame and have clocked about 20k miles and couldn't be happier with them.
Also the LDS compressor kit complements the larger injectors nicely

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  #115  
Old 10-12-2017, 10:49 AM
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Quote:
Originally Posted by Summitsmoke403 View Post
Just installed mine over the Columbus day weekend. Truck is a beast now and has never ran smoother! Thanks Brent!

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Glad to hear! Your welcome!
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  #116  
Old 10-12-2017, 01:21 PM
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So the best tune for the SAC45's is the EFILive? Could I use an Edge tuner or something similar?
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  #117  
Old 10-12-2017, 01:37 PM
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Quote:
Originally Posted by jchav62 View Post
So the best tune for the SAC45's is the EFILive? Could I use an Edge tuner or something similar?
Pretty much anything but efi is garbage. Edges tend to be dangerous. And with the sac injectors you need a custom tune i.e. EFILive
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  #118  
Old 10-12-2017, 03:27 PM
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Quote:
Originally Posted by jchav62 View Post
So the best tune for the SAC45's is the EFILive? Could I use an Edge tuner or something similar?
Saying an edge is good enough is like saying just using your hand is good enough.....even with stock injectors.
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  #119  
Old 10-12-2017, 04:48 PM
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Quote:
Originally Posted by jchav62 View Post
So the best tune for the SAC45's is the EFILive? Could I use an Edge tuner or something similar?
I have had Bob Olsen tunes in my lb7 for the last 4 years and when I Installed the sac injectors it ran better. I haven't seen anything that needs addressing with the current tunes in my truck. It idles fine, runs damn good. And doesn't smoke. Dfrp is like 5.7 at idle and actual frp is dead on that. Egts don't go beyond 1k except at wot.... not sure what would needed to be tuned?

Like I said it seems to run great all around on all 5 tunes, it's never had this good of throttle response since I've owned it.

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04 lb7 CC/SB dsp5 EFI live by Bob Olsen, big head waste gate actuator, air raid intake, air dog 100, high flow driver side exhaust manifold, 3" profab downpipe, 5" MBRP exhaust sac 45% over sticks, WCF 3" y bridge, ported intake horn, ati dampner, lbz cp3, cat filter head/filter.
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  #120  
Old 10-12-2017, 06:24 PM
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Quote:
Originally Posted by Summitsmoke403 View Post
I have had Bob Olsen tunes in my lb7 for the last 4 years and when I Installed the sac injectors it ran better. I haven't seen anything that needs addressing with the current tunes in my truck. It idles fine, runs damn good. And doesn't smoke. Dfrp is like 5.7 at idle and actual frp is dead on that. Egts don't go beyond 1k except at wot.... not sure what would needed to be tuned?

Like I said it seems to run great all around on all 5 tunes, it's never had this good of throttle response since I've owned it.

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There's literally 3 posts on page 8 (same page you posted on) about the advantages and need to have them tuned properly. Yes they will run not tuned for them. Maybe even better than the previous style. But will run better once tuned.
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2002 Chevy EC/SB LT 4x4. S&B intake. 5" Magnaflow SP. LML manifold. PPE stage 5 tranny. 30% over Bosch injectors. LBZ SuperSport pump. Studs. All powder coated. EFI by Ridge Runner. Twin Kennedy pumps & pickup. Glowshift gauges. Edge insight cts. Trimmed and lowered on Gear 22x12s and 305/40 Proxes ST. SOLD

Now driving a 2011 f150 platinum ecoboost with 288k
Other toys:
"Tank" 1982 K10 6.2 Detroit diesel/sm465/np205 with 4 inches of lift and 35s. Slow and indestructible
2011 Yamaha YFZ450X
1992 Yamaha Waverunner 3
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