PCM Diagnostics & Tuning HP Tuners | Holley | Diablo
Sponsored by:
Sponsored by:

How big of an affect can IFR table be?

Thread Tools
 
Search this Thread
 
Old 08-12-2006, 12:26 PM
  #1  
TECH Junkie
Thread Starter
iTrader: (19)
 
Slow Z28's Avatar
 
Join Date: Nov 2001
Location: My house
Posts: 3,337
Likes: 0
Received 2 Likes on 2 Posts

Default How big of an affect can IFR table be?

I changed quite a bit on the car. Going from the LS1 intake and stock MAF w/ SVO 30lb injectors to the Beck SM Intake, SD Tune, and SVO 42lb injectors. had forgotten the calculations for the IFR change. so i couldn't change that so tuning didn't really matter since i'd have to change that later.

But for fun we did get the car to idle on it's own, but as soon as you step on the peddle the slightest bit, it'll die.

I'm assuming PART of it has to be the huge jump with the injectors and it just flooding the car out.

But how big of an effect could it have
Old 08-12-2006, 12:41 PM
  #2  
TECH Senior Member
iTrader: (25)
 
2xLS1's Avatar
 
Join Date: Nov 2001
Location: Warr Acres, OK
Posts: 5,649
Likes: 0
Received 8 Likes on 8 Posts

Default

Huge. You are doubling the amount of fuel the car needs to run with those injectors and the stock IFR table.
Old 08-12-2006, 12:49 PM
  #3  
TECH Junkie
Thread Starter
iTrader: (19)
 
Slow Z28's Avatar
 
Join Date: Nov 2001
Location: My house
Posts: 3,337
Likes: 0
Received 2 Likes on 2 Posts

Default

well that's good to know. just one of those little things like forgetting the calculations at work, means no car for the weekend since a buddy is helping with the HP Tuners.

I really should just by my own, haha.
Old 08-12-2006, 01:17 PM
  #4  
TECH Senior Member
 
joecar's Avatar
 
Join Date: Apr 2002
Location: So.Cal.
Posts: 6,077
Likes: 0
Received 11 Likes on 9 Posts

Default

Would this help: http://www.allmod.net/hpt/injectors.xls
Old 08-12-2006, 01:27 PM
  #5  
TECH Junkie
Thread Starter
iTrader: (19)
 
Slow Z28's Avatar
 
Join Date: Nov 2001
Location: My house
Posts: 3,337
Likes: 0
Received 2 Likes on 2 Posts

Default

it was just that I left my stuff at work, and no internet access at home.(since i spend all day at work on it) thanks for that though, i'm comparing THAT to just using the calculation that has been posted in a couple threads.

i still need to find out WHICH 42lb'ers i've got. the ones that are rated at 43.5lbs of fuel pressure or the ones that seem to be rated at 40lb's. quite a difference with that.
Old 08-12-2006, 02:55 PM
  #6  
TECH Enthusiast
iTrader: (14)
 
muncie21's Avatar
 
Join Date: Apr 2005
Location: NE Ohio
Posts: 591
Likes: 0
Received 0 Likes on 0 Posts

Default

While not as drastic as flow volume, injector offset differences between different types (Delphi vs. SVO, for example) will through off low RPM tuning.




All times are GMT -5. The time now is 09:32 PM.