Al, what cams would you recomend?
Jun 28, 2004, 08:38 PM
#16
Evolved Member
iTrader: (17)
Join Date: Feb 2003
Location: Vegas
Posts: 5,424
Likes: 0
Received 0 Likes
on
0 Posts
With my set up do you sugguest running larger injectors before I upgrade to the HKS 264's? If so what size should I look into? My mods are; hks cat back, helix dp, hi-flow cat, dynoflash tune @AMS (fireball 3), K&N cone intake, walbro 255, upgraded clutch and flywheel, and greddy profec spec b and type-s bov.
Last edited by lil'evil_evo; Jun 28, 2004 at 08:40 PM.
Jun 29, 2004, 11:08 AM
#17
Evolved Member
iTrader: (54)
Join Date: Jan 2003
Location: NC
Posts: 1,181
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by DynoFlash
Interesting calculations - there is no dounbt in my mind WHY your evo is so fast with such minimal modifications !
Interestingly with my old turbo - 780 cc injectors - 49 psi of static fuel pressure I was at 94% duty cycle on the injectors with 28 psi of boost. With the new turbo I hit 100% duty cycle at only 26 psi and now have to upgrade to 1000 injectors which should be here tomorrow. It should be interesting to see what the air flow calculates to on this new turbo, its only rated at 30 more whp than the last one but seems to have much bigger lungs
Interestingly with my old turbo - 780 cc injectors - 49 psi of static fuel pressure I was at 94% duty cycle on the injectors with 28 psi of boost. With the new turbo I hit 100% duty cycle at only 26 psi and now have to upgrade to 1000 injectors which should be here tomorrow. It should be interesting to see what the air flow calculates to on this new turbo, its only rated at 30 more whp than the last one but seems to have much bigger lungs
You can do the same with the new turbo and the 100% duty cycle at 26 psi and see how much more air flow you are getting.
Brian
Jun 29, 2004, 05:16 PM
#18
Account Disabled
iTrader: (91)
Join Date: Sep 2003
Location: 2003 Evo VIII - Silver
Posts: 16,850
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by TURBODAWG
What air fuel ratio are seeing at the 94% duty cycle on the 780 cc injectors at 49+28 = 77 psi of fuel pressure. From that number we can back calculate to approximate how much air flow you are achieving in lbs/min.
You can do the same with the new turbo and the 100% duty cycle at 26 psi and see how much more air flow you are getting.
Brian
You can do the same with the new turbo and the 100% duty cycle at 26 psi and see how much more air flow you are getting.
Brian
See how your math calclates and I will post the dyno sheet later tonight !!!
Jun 29, 2004, 06:04 PM
#19
Evolved Member
Originally Posted by lil'evil_evo
With my set up do you sugguest running larger injectors before I upgrade to the HKS 264's? If so what size should I look into? My mods are; hks cat back, helix dp, hi-flow cat, dynoflash tune @AMS (fireball 3), K&N cone intake, walbro 255, upgraded clutch and flywheel, and greddy profec spec b and type-s bov.
Put them in when you do the cams.
Then limp your way to whatever you can get retuned, and quickly.
You'll be OK in closed loop mode, but open loop you will go so rich it'll feel like the turbo fell off.
Jun 29, 2004, 06:57 PM
#20
Evolved Member
iTrader: (17)
Join Date: Feb 2003
Location: Vegas
Posts: 5,424
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by mikesevo8
650/660cc are a good match for the 264 cams (check my sig). 20% larger than stock.
Put them in when you do the cams.
Then limp your way to whatever you can get retuned, and quickly.
You'll be OK in closed loop mode, but open loop you will go so rich it'll feel like the turbo fell off.
Put them in when you do the cams.
Then limp your way to whatever you can get retuned, and quickly.
You'll be OK in closed loop mode, but open loop you will go so rich it'll feel like the turbo fell off.
Thread
Thread Starter
Forum
Replies
Last Post
PHILLY EVO
Evo Engine / Turbo / Drivetrain
63
Feb 25, 2005 03:40 PM
