Jump to content
SAU Community

Is It Safe To Drive The Car Hard

Andrew.Y

By Andrew.Y,
in Engines & Forced Induction

 Share

Recommended Posts

Andrew.Y Enthusiast

Andrew.Y

Posted
Posted

Hi everyone,

I have just put a set of Garrett -7s on the 34 GTR, with HKS boost controller to 1 bar, stock injector/fuel pump/fuel rail, with full WELDINA NE-1 exhaust.

Before doing that the injector is about to maxing out about 1 bar on stock turbo.

My question are:

* Is it safe to drive the car hard for the current mod? (new mod's on the way)

* What is the consequence of maxing out the injectors with a bigger turbo? is it going to damage the engine in any way?

* What happens if I increased the boost to 1.2 bar with stock injectors?

The car is not even on road yet so all these questions are hypothetical. however I would really appreciate if I get some answers.

Thanks.

Link to comment
https://www.sau.com.au/forums/topic/345748-is-it-safe-to-drive-the-car-hard/
Share on other sites
Don Dada Mentor

Don Dada

Posted
Posted

Maxing out the injectors means that they cannot flow or add any more fuel to compensate for the increased air flow when u turn up the boost so the engine will lean out and guess what.....BANG!!!!

Turn down the boost to 10-11 psi and u "should" be good until an injector AND ecu upgrade

Andrew.Y Enthusiast

Andrew.Y

Posted
  • Author
Posted
Maxing out the injectors means that they cannot flow or add any more fuel to compensate for the increased air flow when u turn up the boost so the engine will lean out and guess what.....BANG!!!!

Turn down the boost to 10-11 psi and u "should" be good until an injector AND ecu upgrade

Thanks!

Got pfc. 550cc injectors are on the way. are they big enough for -7?

Also wondering which is more harmful to the engine: too much air or too much fuel?

Andrew.Y Enthusiast

Andrew.Y

Posted
  • Author
Posted
"Give me your R34 GTR, you don't deserve it." :/

Seriously...

550cc will be good enough for pump...if u have plans to go E85 u might need to go bigger

Too much air with not enough fuel....as in your case

lol we all stay up a bit late...

Bosch 044 + 550cc will be the fuel set up.

E85, is it road legal? i'm not sure just asking...

Andrew.Y Enthusiast

Andrew.Y

Posted
  • Author
Posted
i was running -7's on my gtr on the stock ecu and stock injectors for quite some time and it was fine, it was tad on the rich side though

good to know snozzle. thanks for the info.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Jarsky
      R33 Fuel Pump & Brakes after alarm swap

      By Jarsky · Posted

      If you mean the alarm immobiliser; theyre internal to the alarm itself which makes that difficult; I couldnt even see where he put it; its not in the same place as last time; but with all black wiring it might be very challenging to trace  I had someone turn the key for me as I know it only primes for a couple of seconds As my post above; I am getting no voltage to the pump at all; but I am testing continuity of the power line (SB) from the pump plug to the relay fine. As well as the negative from the pump plug to a 12V constant.    Yeah; he blammed the no start on a bad battery; said I needed to get a new battery and it'll start. Turns out the battery drained because the tail lights had been on for half the day during the install (the rubber cushion on the brake switch gave out while he was testing it as I have a picture of the car from that morning with the tail lights off..i've replaced that). The battery was turning over the engine just fine for a long time; but got low since lights were draining it so it was too low to test a start after he finished. I bought a new one on his advice...$250 wasted. My original battery charged up just fine and is healthy.    It was running perfectly fine when I messed up the old alarm (programmed out the remotes). He couldnt start it after removing the old alarm; my assumption is that when he unhooked it; he didnt bridge the circuit back when trying to start it. Its always been perfectly fine. The ECU swap and pump were 2 years ago. It's never missed a beat in that time. 
    • PranK
      My BMW 335i

      By PranK · Posted

      This is a big issue for me without the diff. I just have zero drive from the passenger side when drivers side has no traction. Bec's parents place has a crazy steep driveway with odd camber and I have never been able to get up. My bro-in-law's 130i with an (unknown brand) LSD gets up fine as does their dad's Hiace. My car stays at the bottom. We have other odd camber roads around here as we're elevated a bit and if it's raining I can get totally stuck around some hairpins. 
    • PranK
      My BMW 335i

      By PranK · Posted

      Yeah, I am super excited for this.
    • Murray_Calavera
      R33 Fuel Pump & Brakes after alarm swap

      By Murray_Calavera · Posted

      Was the car running before he touched the car?
    • soviet_merlin
      My BMW 335i

      By soviet_merlin · Posted

      😛 
×
×
  • Create New...