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Forced Induction - V6 V6 Supercharger, turbo, nitrous discussions

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Old 11-05-2012, 02:15 PM   #101
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I already want an LFX now :(
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Old 11-05-2012, 02:25 PM   #102
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I already want an LFX now :(
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Old 11-05-2012, 02:41 PM   #103
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Might want to wait until we get done before you get too excited. It is too early to tell what issues we are going to run into.

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647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build
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Old 11-05-2012, 02:45 PM   #104
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Might want to wait until we get done before you get too excited. It is too early to tell what issues we are going to ron into.

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We will know thrusday what Matt is able to pull out of Andrews LFX Supercharger
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Old 11-05-2012, 02:48 PM   #105
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That is awesome Gretch.Looks like this is the final nail in the coffin for the LLT and that damn bosch ecu.Looks like you have made more progress tuning the LFX in one week than we have made in the last 2.5 years messing with the llt.I cant wait to see results after you start putting the go fast goodies on.Just knowing you can tune the LFX and pick your tunner is a huge plus.Now you have me thinking a bare bones LFX 1ls m6 would be a great car to do a build the way i want.
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Old 11-05-2012, 02:59 PM   #106
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Hi !

Why damn BOSCH ECU ??

We get AFR 12.0 (at header) @ 8-9PSI (at sea level) @ 7250RPM without any problems at all our LLT-SC conversions !

Its only the pure knowlege about the Bosch - ECU .. nothing more ... no mystery !

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Old 11-05-2012, 03:01 PM   #107
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isnt 12.0 AFR to high?
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Old 11-05-2012, 03:31 PM   #108
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Hi !

AFR12 = Lambda 0.80 at 91OCT !!

Best combustion process .. best power delivery .. best drivebility ... best sparc lifetime ... what else do you like to hear ?

Do you want to drain fuel into the engine without sence ??

All modern DFI engines run much more leaner then normal Injected (Intake) engines !!

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Old 11-05-2012, 03:38 PM   #109
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Okay, this is the kind of stuff that has lead to thread closures before. I respectfully as the vendors to hawk their wares and services in their own threads. This is my build thread and I don't want it closed. It certainly doesn't benefit from getting sidetracked by a discussion of the virtues/vices of the Bosch ECU.
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647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build
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Old 11-05-2012, 03:49 PM   #110
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Hello !

i also dont want this treat be closed ... i only want to say something true about the Bosch ECU because i see lots of comments about the "fulling issue" with bosch ECU like the statements before ... that you dont have to face ! !

The DELCO ECU of the LFX is much easier to Tune ... the LFX Zylinderhead is a much better design then the LLT one ... so why dont go the LFX way !

have fun with your conversion !

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Old 11-05-2012, 04:01 PM   #111
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The DELCO ECU of the LFX is much easier to Tune ... the LFX Zylinderhead is a much better design then the LLT one ... so why dont go the LFX way !
I think I speak for most people with an LLT by saying it isn't economically feasible to just "go the LFX way." However I cannot wait to see what happens with this build.

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Old 11-05-2012, 04:22 PM   #112
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Well Im subscribed I plan on going FI with my LFX. I did my baseline dyno few months back was going to do a few bolts on but was like whats the point if Im going to go FI they will just have to come off waste of money. Hopefully I can follow most of his build to suit. 425 to 450 rwhp is good enough for me good luck on the build good sir
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Old 11-05-2012, 04:24 PM   #113
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Is it possible to just swap the heads, intake manifold, ECU and what ever else from a LFX to a LLT??
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Old 11-05-2012, 04:27 PM   #114
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We will know thrusday what Matt is able to pull out of Andrews LFX Supercharger
C'mon Thursday haha!!
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Old 11-05-2012, 04:29 PM   #115
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Is it possible to just swap the heads, intake manifold, ECU and what ever else from a LFX to a LLT??
No, Matt @ RX and I have already looked into this.

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Old 11-05-2012, 04:51 PM   #116
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Oh poo! lol
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Old 11-05-2012, 05:20 PM   #117
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Sorry for the image, looks like it got cut off. I'll have him send another.

Basically, after tuning he did three pulls with the factory tune and three with his tune. Car was pretty hot so it might have been a bit better with a cool down. Since we were trying to just look at gains, this is good enough. By the way, after cleaning up the AFR and timing there wasn't much gain from the VVT tuning. There was a pretty nice bump in the low-end torque with the TP/Comm Tq change -- it's just hard to see with the graph cutoff on the left and bottom. Remember, this is 87 octane, so we are not running as much timing as we could (about 2 degrees less than what the factory tune had, but there was a lot of KR).

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EFR Twin Turbo LFX-GPI Tune-ZL1 fuel pump-10:1 CR forged pistons-3.45 gear-Meth Injection-BMR Trailing Arms, Bushings & Sway Bars-CircleD 4000 Stall-GPI Fuel Enrichment System
647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build
Build Thread
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Old 11-05-2012, 05:22 PM   #118
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VERY impressive! Thanks for the update. Tuned for 93 and full bolts ons I see absolutely no reason why this can't be over 300-310 rwhp!

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Old 11-05-2012, 05:56 PM   #119
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VERY impressive! Thanks for the update. Tuned for 93 and full bolts ons I see absolutely no reason why this can't be over 300-310 rwhp!

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We are guessing a max of +10 RWHP on 93-octane tune. Not sure how much a CAI would do on top of that. The thing I noticed is that the down pipe has a very sharp right-angle turn right where it connects to the heads. I would bet an after-market down pipe would add some ponies on these things.

Either way, I'll be going straight to turbos after this so I guess someone else will have to work all that out.
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647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build
Build Thread
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Old 11-05-2012, 07:55 PM   #120
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Derrick you or Rhino know if the LFX ECU has a flash counter like the V8's but unlike the LLT?


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Old 11-05-2012, 08:06 PM   #121
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Derrick you or Rhino know if the LFX ECU has a flash counter like the V8's but unlike the LLT?


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Yes.

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647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build
Build Thread
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Old 11-05-2012, 08:07 PM   #122
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Derrick you or Rhino know if the LFX ECU has a flash counter like the V8's but unlike the LLT?


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I think vince and bnracing had already said there was. I could be wrong though
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Old 11-05-2012, 09:34 PM   #123
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AWESOME, Guess I better get out and read more sections than the few that I do. I am just now catching up top this one. CONGRATS.

Can't wait to hear more of the results and news.

GREAT color choice too.
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Old 11-06-2012, 10:33 AM   #124
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Excellent Gretch!!
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Old 11-06-2012, 01:11 PM   #125
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Dang 274. I think I'm going to to need to tune mine now! I got 277 with mods and no tune.
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