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Big Zeus Build Thread

28782 Views 252 Replies 16 Participants Last post by  Dave's World
10
Ok, after a long period of contemplation, I have decided to go ahead and make a thread documenting my 2013 Cruze LT 1.4L. I will name it a build thread, but don't really consider it that. This is just something that I work on and improve as time and funds allow. I like to tinker and find different ways to do things as well as maximize performance. I do all the work in my enclosed garage and have a decent amount of tools. Most if not all of the modifications will be bolt on.

Maintenance/work list:

Window tint 12/1/2018 54k
New tires 55000 discount tire
Paint correction and wax 55k
Dorman thermostat 4/25/2019 55k
Transmission fluid drain and fill valvoline 55k 5/10/19
Front rotor resurface 55k 5/10/19
BNR tune purchased and installed
New plug boots rock auto standard brand 55k 5/17/19
New battery (larger size) and negative cable OEM and mechanical boost gauge 55k 5/23/19
Transmission fluid drain and fill AC Delco
56k 6/28/19
Oil change and filter 56,048 7/12/19 super tech synthetic
ZZP downpipe 7/15/19
Installed black vinyl over emblems
New ac delco ceramic brake shoes front 56,300 8/23/19
New driver window motor and tint 9/4/19
New belt tensioner and belt ac Delco 11/24/19 | 56,500
digital boost gauge 12/14/19 56,600
Fixed turbo outlet line coolant leak and installed new water pump. New antifreeze 56,700 1/9/20

Changed oil penzoil ultra platinum 5w30
57,322 3/22/20

Compression right to left
180,200,195,205 Psi

5/5/20 57,541 new oil gm, oil pan reseal, ac Delco turbo oil line 89in lb, 22 ft lb, down pipe reinstalled
Brembo brake rotors 6/15/20

Bnr wastegate actuator 6/20/20
AC Delco spark plugs default gap 8/17/20
Ac Delco water outlet new prestone dexcool antifreeze 8/28/20 57,922

Dorman intake manifold 9/20/20

New purge valve OEM, BNR throttle body spacer, boost leak test passed 9/30/20 58008
New MAF Ac Delco 10/21/20 58106
New FCS front struts 58,500 1/18/21
New FCS rear shocks 58,600 2/23/21

Oil change pennzoil plat ultra, BNR LS7 coils 58669 4/12/21

New GM water pump and gasket
58,700 4/28/21

BNR Intake manifold spacer, new driver CV Axle, Cardone reman.
59,000 11/6/21

Rotated tires
59,111 11/20/21

ZZP V3 Turbo, used 1500 miles
59,300 04/02/22

Oil change Pennzoil Platinum
59,360 04/03/22

ZZP Ported intake manifold, PCV 3.4 fix kit
59,450 04/22/22




And the story begins:


When she was pretty new, she was full of swirl marks and scratches. This is after a professional paint correction that I did myself with the pictured Meguiars and harbor freight DA. Tons of work and it took days. I went panel by panel.
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Next, got some new shoes (Continental Control Contact) These things are great, so much softer than the old Michelins
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Shortly after, it was time to start fixing leaks. This was the first one, I fabbed up a piece of rubber tubing and put a heat shield on it. It has lasted almost 2 years now with no leaks.
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Had a transmission fluid leak that was likely from an overfill, did a drain and fill X3 with AC Delco fluid.
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Next was a rich condition, which I finally narrowed down to the cooler NGK plugs I installed, Don't go with the 8's... unless you like unburnt fuel
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Next up is oil leak time, the oil cooler and pan were leaking. The dealer fixed the pan and for some reason painted it all with silver spray paint... I did the oil cooler a month or two on my own after. More to come in next post
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continued below...
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i guess my ask is who is writing the mapping and stuff.. The handheld is just an interface..
“ that fix we're working on with EFILive will take care of it.”

so both it appears. Fine by me.
Bigzeus you still on the stock turbo ? I’m curious about this beta tune. I should get jerry to revise mine on my big wheel turbo
Bigzeus you still on the stock turbo ? I’m curious about this beta tune. I should get jerry to revise mine on my big wheel turbo
yes it want holding boost as expected and limping some.
Still can't figure out the largely negative and jumpy ltft... swapped to another set of OEM injectors and same issue. Seems when the engine warms up more it gets worse... Based on a search negative ltft can be:

  • Leaky or chattering fuel injector
  • Defective fuel pressure regulator unable to maintain fuel pressure or restricted fuel return line.
  • Restricted air intake system or clogged air filter.
  • Restricted exhaust because clogged converter, crushed exhaust pipe or plugged muffler.
  • Defective oxygen sensor or its wiring.

I have installed a new OEM front O2 sensor, air fitler only has like 1k miles on it, injectors have been swapped, I don't have a cat converter. New MAF. Boost test passes with flying colors. They of course go negative when I let off the gas as I have an atmospheric BOV... so air is being vented and not recirculated, but this is happening even with the cruise control set to say 35. It seems to run ok, but it's driving me nuts because it seems there's an issue. Fuel pressure is always 44-50 PSI or so. Out of sight out of mind? Someone on BNR facebook mentioned to test the barometric sensor... as cheap as they are I could put one of those in too. Isn't there two?

Green line on graph. Orange is duty cycle.
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A new MAP is like $20-25
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A new MAP is like $20-25
Isn’t there two? Is map same as baro sensor? One on intake manifold and one on charge pipe?
Isn’t there two? Is map same as baro sensor? One on intake manifold and one on charge pipe?
MAP and MAF - two different
MAP and MAF - two different
Yes, I know that part, I already replaced the MAF, that's on the intake by the filter. I think cruze has two Baros/MAPs though...
Also, to confirm, the second O2 sensor isn't factored in other than to measure catalyst efficiency, right? It has not been replaced.

Lastly, I was thinking of opening the airbox and taking the filter out and or leaving it slightly open and driving around just the neighborhood. Curious if more air cures the issue.
Yes, I know that part, I already replaced the MAF, that's on the intake by the filter. I think cruze has two Baros/MAPs though...
Yeah, entirely different purpose. I don't think the new ones are as likely to go bad as the older-style MAFs.

Also, to confirm, the second O2 sensor isn't factored in other than to measure catalyst efficiency, right? It has not been replaced.
That should be the case, yes.
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Also, isn't this weird... seems the O2 sensor cuts out momentarily and no fuel trims are adjusted... Spark is also retarded a ton there... idk...

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Is this the front or rear O2?

@Snipesy , it's not a diesel, but perhaps you have some thoughts?
Yes, they are both MAPs

EDIT:
The Baro measures the barometric (outside air) pressure - 55568175
The MAP measures the Manifold Absolute (air inside the manifold) pressure. -55567257
The O2 sensor between the cat and the engine is the “upstream” sensor. The one after the cat is “downstream" sensor. Generally, the upstream sensor is more important for engine timing and air/fuel ratios.

Check out this link. Very good info on O2 sensors here and much more.
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Is this the front or rear O2?

@Snipesy , it's not a diesel, but perhaps you have some thoughts?
Front I believe.
I wonder if the exhaust is leaking somewhere... that would explain all of this. Also explains why it gets wacky once it gets hotter. The leak would have to I guess be before the o2 sensor, so maybe vband?
I wonder if the exhaust is leaking somewhere... that would explain all of this. Also explains why it gets wacky once it gets hotter. The leak would have to I guess be before the o2 sensor, so maybe vband?
Sounds like a theory.
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Sounds like a theory.
I remember hearing what sounded like a hiss under WOT, I took the downpipe loose and the vband and it didn't seem aligned very well. I tightened it vband first, then the bracket nut. Storming now, will test later or tomorrow.
Is this the front or rear O2?

@Snipesy , it's not a diesel, but perhaps you have some thoughts?
ECM request evap purge. Evap purge doesn't happen. ECM gets confused.

O2 sensor looks fine to me and working as intended.
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