Small example of why GC Lites are the best Sub $3000 hybrid option on the market

[email protected]

Lieutenant
Nov 5, 2016
615
624
0
Bay Area
A customer placed an order online for some lites, LPFP upgrade, Single Barrel, and some repair work that a previous shop had made a little mess of some stuff.

Car specs:
2007 E90 N54 6MT
Spec Twin Disc (customer never wanted to address clutch again even if he goes for more power)
VTT GC Lites turbos
VTT Single Barrell Shotgun
PFS Dual Shot LPFP (Dual 450's)
Delphi Coils from Amazon
NGK 5992's gapped to .020
Pump E85 with about an E75 mixture
VTT Silicone inlets ($100 with GC order)
VTT Silicone Charge pipe ($100 with GC order)
Generic V8Bait tune taken from another build we did.

That's about it. No aux Fueling, no external controllers to program, the DME controls the entire party. Yes, we were running out of fuel on the top end (expected with this power on a Single Barrel, we only rate them to about 550WHP on E85), but Rail pressure never dips below 1400PSI or so, a small drop in Ethanol % should bring it back up.

Results. 600-615WHP/615-650WTQ on an easy 25 psi

The big draw of the lites is the response.

Lets take a look at that. (Keep in mind this is on the dyno with no load)
2000RPM - 350WTQ
2500RPM - 500WTQ
3000RPM - 600WTQ

This is unmatched by ANYONE in this market. Any manufacturer who claims to match it, we would love to see the dynos for it. We are actually bringing in the load slowly down low to keep TQ at bay so we don't pretzle these stock rods. Log showing boost request 19-22 psi midrange, 25 psi up top. These turbos simply outperform anything close to them in the price range. Add a double Barrel or PI kit, and you could get in the 700WHP range pushing them hard up top!

We could not be more pleased with the customer car, and he is gonna have a blast with it!

Log is here: https://datazap.me/u/vargasturbotech/12-06-17-customer-gc-lite-log?log=0&data=3-5-23&zoom=26-80
Final Crane Results.jpg
Lites 350WTQ 2000RPM.jpg
Lites 500WTQ 2500RPM.jpg
Lites 600WTQ 3000RPM.jpg
 

dyezak

Major
May 4, 2017
1,768
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Plano TX
Ride
335is
Even that is scarey to me on a factory shortblock :dizzy:. All those torques :mad: :triumph: and those factory rods :eek::eek:. Did I do good with the emoticons? Hahaha.

Seriously though that's incredible.
 
  • Agree
Reactions: AK135i

dyezak

Major
May 4, 2017
1,768
1,516
0
Plano TX
Ride
335is
@[email protected] @[email protected] or @V8bait

I'm not great at reading logs and this is a pretty good one to look at since the dyno is so clean but this is admittedly a relatively non-perfect tune. I *think* I see two things in this log:

1. Mid range overboost (which is incredible) that caused a throttle closure around 3400-3500 rpm.

2. Fuel showing STFT in the 2750-3900 rpm range up in the 20% range

Are those the two things you would want to address in cleaning up the tune? What else jumps out that a novice should notice? I'm seeing a -6deg hit on Cyl4 timing too, perhaps a little timing massaging in order??

I doubt addressing any of these items would net a cleaner dyno pull or more power, more of a drivability/safety thing correct?
 

[email protected]

Lieutenant
Nov 5, 2016
615
624
0
Bay Area
Boost could be cleaned up slightly. Nothing is going to cause any issues there if left alone. Slight over boost

STFT's in the midrange are normal, and in a good range. They usually go postive, and come down as the DME brings in fuel with boost.

Car pulls timing in that hole every pull. Could be anything, hot spot on the piston, piece of carbon in there, etc. I pulled the plug, checked gap, etc. All looks fine. That cylinder is just a little unhappy. Common on these cars to be honest. Nothing really can be done there
 

dyezak

Major
May 4, 2017
1,768
1,516
0
Plano TX
Ride
335is
Awesome Tony. You put these dyno charts up against most V8's and you'll have them green with envy with the low end torque. Hell, look at a c7 Z06 baseline:

standard.gif

Your 3.0l I6 N54 with GC Lites is within spitting distance of a 6.2l V8 Supercharged engine. IN-SANE. It takes a v8 with a supercharger and double the displacement of the N54 to compare to these dynos. That should make people think...I know it makes me think.
 

colo_evo

Corporal
Jun 6, 2017
158
110
0
Ride
E90 335i MT
Nice work!

A friend just ordered gc lites. I'm excited to see how that car turns out.
 
Last edited:

all4bspinnin

Corporal
Jun 12, 2017
172
93
0
Ride
135i TT
Tony, that shotgun is a wonderful thing. The best part is that with some additional tuning from Justin, I think you'd see a few more.
 

Abacus38

Lieutenant
Nov 2, 2016
642
385
0
32
Tampa/Orlando, FL
Ride
2007 Ti Ag 335i
A customer placed an order online for some lites, LPFP upgrade, Single Barrel, and some repair work that a previous shop had made a little mess of some stuff.

Car specs:
2007 E90 N54 6MT
Spec Twin Disc (customer never wanted to address clutch again even if he goes for more power)
VTT GC Lites turbos
VTT Single Barrell Shotgun
PFS Dual Shot LPFP (Dual 450's)
Delphi Coils from Amazon
NGK 5992's gapped to .020
Pump E85 with about an E75 mixture
VTT Silicone inlets ($100 with GC order)
VTT Silicone Charge pipe ($100 with GC order)
Generic V8Bait tune taken from another build we did.

That's about it. No aux Fueling, no external controllers to program, the DME controls the entire party. Yes, we were running out of fuel on the top end (expected with this power on a Single Barrel, we only rate them to about 550WHP on E85), but Rail pressure never dips below 1400PSI or so, a small drop in Ethanol % should bring it back up.

Results. 600-615WHP/615-650WTQ on an easy 25 psi

The big draw of the lites is the response.

Lets take a look at that. (Keep in mind this is on the dyno with no load)
2000RPM - 350WTQ
2500RPM - 500WTQ
3000RPM - 600WTQ

This is unmatched by ANYONE in this market. Any manufacturer who claims to match it, we would love to see the dynos for it. We are actually bringing in the load slowly down low to keep TQ at bay so we don't pretzle these stock rods. Log showing boost request 19-22 psi midrange, 25 psi up top. These turbos simply outperform anything close to them in the price range. Add a double Barrel or PI kit, and you could get in the 700WHP range pushing them hard up top!

We could not be more pleased with the customer car, and he is gonna have a blast with it!

Log is here: https://datazap.me/u/vargasturbotech/12-06-17-customer-gc-lite-log?log=0&data=3-5-23&zoom=26-80View attachment 7283 View attachment 7284 View attachment 7285 View attachment 7286


But does it make my d*** bigger doe :rolleyes:
 

Blaster3500

Sergeant
Nov 5, 2016
295
245
0
SC
Can't wait to get my single shotgun and be able to push my lites a little more! Thanks for posting.
 

Tuppidsay

Corporal
Aug 3, 2017
112
62
0
Seattle, WA
Ride
2008 535i
Ive driven a lot of turbo cars and nothing pulls like my car with gc lites. You usually get torque down low and no top end (stock n54 and especially n55) or shit tons of lag and then they sling shot (sti's, 300zx, etc). This car just pulls, and pulls, and pulls. Relentless power. Its unreal. I get the folks who do big single turbos but for a well behaved everyday street monster, gc lites hands down. Would love to have the simplicity of a shotgun and e85, but e85 stations are too few and far between around here so port injected meth gets the job done nicely.
 

Rob09msport

Major
Oct 28, 2017
1,929
664
0
Monroe CT
Ride
09 335i msport le mans 18 x5
This thread is about a customer car not shop car check post plus their is a 135 build overseas in this section of forum where he went from stage 1 hybrids to gc's