Supercharged/Turbocharged The increase in air/fuel pressure above atmospheric pressure in the intake system caused by the action of a supercharger or turbocharger attached to an engine.

Turning up the boost!! need help.

Thread Tools
 
Search this Thread
 
Old Jul 23, 2003 | 07:30 AM
  #1  
Redmax's Avatar
Thread Starter
Redlinemax Owner
iTrader: (20)
 
Joined: Aug 2000
Posts: 6,027
Turning up the boost!! need help.

Ok, I am bringing my car back to the turbo fabricator/installer on friday so that they can tune the car, and turn up the boost. My tranny will finished being bulletproofed on fri. My axles are being built and installed by fri. So, now the question is what is holding me back from getting the car tuned to 10psi of boost. I am running a t04b turbo and have ansafc2 for tuning. Will i be maxing my injectors out at 10 psi? Currently i have an MSD external Fuel pump in the car but will be going to a walbro soon.
Old Jul 23, 2003 | 08:17 AM
  #2  
[maxi-overdose]'s Avatar
Supporting Maxima.org Member
iTrader: (3)
 
Joined: Apr 2001
Posts: 4,304
what FMU are you running? if it is a 8:1.....you will hit ~100psi of fuel at 10psi of boost. since you have a 4th gen, it will be wise to look into larger injectors to supply more fuel. I would get a adjustable FMU too, the Cartech one goes from 1.5:1 to 10:1.
Old Jul 23, 2003 | 09:01 AM
  #3  
PCGuRu2K's Avatar
Supporting Maxima.org Member
iTrader: (34)
 
Joined: Sep 2001
Posts: 5,006
From: NY, NY
Originally posted by [maxi-overdose]
what FMU are you running? if it is a 8:1.....you will hit ~100psi of fuel at 10psi of boost. since you have a 4th gen, it will be wise to look into larger injectors to supply more fuel. I would get a adjustable FMU too, the Cartech one goes from 1.5:1 to 10:1.
He turbo'd the 3rd Gen... So can't he use the 300zx injectors?
Old Jul 23, 2003 | 09:28 AM
  #4  
Redmax's Avatar
Thread Starter
Redlinemax Owner
iTrader: (20)
 
Joined: Aug 2000
Posts: 6,027
nope i turboed my 4th gen. I have an 8:1 fmu
Old Jul 23, 2003 | 09:47 AM
  #5  
[maxi-overdose]'s Avatar
Supporting Maxima.org Member
iTrader: (3)
 
Joined: Apr 2001
Posts: 4,304
Originally posted by Redmax
nope i turboed my 4th gen. I have an 8:1 fmu
if you bring her up to 10psi...then you will expect to see a high fuel pressure from ~4000rpm to red line. IIRC, stcok injectors lock up at 110psi of fuel. I would get an adjustable FMU to lower the fuel p. a little. But even though you adjust the fuel pressure, you are still dealing with low injector flow rate.


how much boost are you running right now? IIRC, 6psi of turbo boost is pretty fun already. just turn it up a little and see how the car's doing. you should be able to know how much boost your car can handle. dyno it and see what AFR you are getting @ 10psi. if you are still running rich with stock injectors, then you should be fine.
Old Jul 23, 2003 | 11:00 AM
  #6  
Redmax's Avatar
Thread Starter
Redlinemax Owner
iTrader: (20)
 
Joined: Aug 2000
Posts: 6,027
so it looks like i can only go to 8 on stock injectors and be safe. Hey Mardi, so when are you getting rid of your 370cc injectors? :P
Old Jul 23, 2003 | 11:45 AM
  #7  
sherwin35's Avatar
Member
 
Joined: Mar 2003
Posts: 32
I saw your car at the shop where the kit is being installed. The kit looks good. I have a Red SEL. PFI kit is being in instaled. If you are in New York after it is done, we should hook up. TWO RED TURBOED SEL"S (NICE.....)
Old Jul 23, 2003 | 11:56 AM
  #8  
Redmax's Avatar
Thread Starter
Redlinemax Owner
iTrader: (20)
 
Joined: Aug 2000
Posts: 6,027
I already have my car back but i am going up on sat to get the car tuned
Old Jul 23, 2003 | 04:23 PM
  #9  
MardiGrasMax's Avatar
Supporting Maxima.org Member
iTrader: (14)
 
Joined: Aug 2000
Posts: 4,491
Sorry their spoken for. If your gonna invest get 555cc and a, dare I say, a JWT ECU? or e-Manage?
Old Jul 28, 2003 | 07:29 PM
  #10  
celica's Avatar
Senior Member
 
Joined: Jan 2001
Posts: 387
Originally posted by sherwin35
I saw your car at the shop where the kit is being installed. The kit looks good. I have a Red SEL. PFI kit is being in instaled. If you are in New York after it is done, we should hook up. TWO RED TURBOED SEL"S (NICE.....)
what shop are u gettin your turbo installed. i be seein your car over by remson side. my cousin with the black 92 stick max know u.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gavin68
5th Generation Maxima (2000-2003)
8
Sep 18, 2021 12:36 PM
My Coffee
New Member Introductions
15
Jun 6, 2017 02:01 PM
Need help
5th Generation Maxima (2000-2003)
23
Oct 2, 2015 08:56 AM
DC_Juggernaut
7th Generation Maxima (2009-2015)
4
Sep 28, 2015 04:07 PM




All times are GMT -7. The time now is 07:21 AM.