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  #151  
Old 01-22-2020, 01:43 PM
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Stielow Stielow is offline
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Ok so now I am confused. Are you replacing the direct injection with port injection or are you using both which sounds a little mind boggling.



Thanks,

Don


The GM LT4 ECM (E92) will control all the functions like DI injectors, timing, throttle. The Holley piggy back will add PFI injectors and a PWM bypass valve in the blower to control boost.

The stock LT5 use 2 ECMs from the factory. A E99 and a S53 ECMs. The issue with the LT5 set up is fairly locked up and does not have the flexibility we want.


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  #152  
Old 01-22-2020, 03:16 PM
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Originally Posted by Stielow View Post
The GM LT4 ECM (E92) will control all the functions like DI injectors, timing, throttle. The Holley piggy back will add PFI injectors and a PWM bypass valve in the blower to control boost.

The stock LT5 use 2 ECMs from the factory. A E99 and a S53 ECMs. The issue with the LT5 set up is fairly locked up and does not have the flexibility we want.


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So would the direct injection be a MAF based system and the port injection speed density? I値l bet it will be fun keeping the two systems stable and playing well with each other. Sorry for all the questions. Just find it interesting.

Thanks,
Don
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  #153  
Old 01-23-2020, 01:31 AM
CarlC CarlC is offline
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We run -8 lines off the valve covers to a -10. That runs to the top of the dry sump tank. Then the dry sump tank vents through a Mann and Hummel Air oil separator. The 5/8 line coming off the air oil separator runs to the induction tube.
Regarding the induction tube attachment, understanding that Mann Hummel -10 line should be downstream of the MAF, have you found there to be an better attachment angle/arrangement? A "T" with the -10 hose connection at an angle to the airflow + away from the short radius bends? I'm finding a larger fresh air vent is needed to help keep the oil clean vs. the stock 3/8" lines.
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  #154  
Old 01-25-2020, 01:53 PM
jeff71 jeff71 is offline
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Hey Mark,

What mufflers do you intend to use? In the past I致e heard several of your cars in person Mule, Jackass 1.0, Red Devil and Hellfire. If I remember correctly several of those ran the Borla XR1?

I知 at the exhaust stage on my project and want ZERO drone and mild sound as you seem to want.
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  #155  
Old 01-27-2020, 03:12 PM
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Hey Mark,



What mufflers do you intend to use? In the past I致e heard several of your cars in person Mule, Jackass 1.0, Red Devil and Hellfire. If I remember correctly several of those ran the Borla XR1?



I知 at the exhaust stage on my project and want ZERO drone and mild sound as you seem to want.


Great question. I have a set of prototype mufflers coming from Hooker to try.

I want the same thing you do, fairly quite and no drone at 70 - 80 mph.

I値l post on how they work and if Hooker is going to make them.

Mark


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  #156  
Old 01-27-2020, 06:49 PM
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Heavy fab work. Adding a diff cooler. The Gen 5 ZL1 uses a oil to oil diff cooler. The transmission has a transmission oil pump in it. Pump the trans fluid to the radiator, through a oil to water oil cooler then to the diff thought a oil to oil cooler. The the fluid returns to the transmission. I値l use a stand alone electric transport oil pump to circulate the fluid.

I repurposed the diff cooler to my GearFX housing. Made a steel box out of 3/16 mild steel (In hindsight 1/8 might be ok). Hogged out a big hole making sure the cooler clears the center section. Weld it all back together. The 3/16 plate did not warp when I welded it.

I did the same modification to Hellfire and Jackass. I did not add this to Gunner and I could over temp the diff in 4 20 min track sessions.




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  #157  
Old 01-27-2020, 09:43 PM
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Thanks for the response Mark.

Any hints on the type? Straight through, Turbo or Chambered?

Thanks
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  #158  
Old 01-28-2020, 09:26 AM
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Interested in those new mufflers as well.

I love the sound of the Borlas. Did you run any type of resonator with your previous builds Mark? Before or after the muffler?

Thanks!
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  #159  
Old 01-29-2020, 06:59 AM
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Thanks for the response Mark.



Any hints on the type? Straight through, Turbo or Chambered?



Thanks


Not sure yet.

Mark


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  #160  
Old 01-29-2020, 07:03 AM
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Interested in those new mufflers as well.



I love the sound of the Borlas. Did you run any type of resonator with your previous builds Mark? Before or after the muffler?



Thanks!


Yes resonators before the mufflers.

If you want to get what was on Gunner Hooker sells it.




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