How much boost on pump gas do you run?
5 bar map sensor based, we tune 93 pump stock turbos to 23 psi peak. Greens it depends on the midrange (if it creeps we will hit 23-24) but generally around 23-24.
I mention the map sensor because more often than not 23psi on a map sensor is like 25 psi on a mechanical boost gauge.
I mention the map sensor because more often than not 23psi on a map sensor is like 25 psi on a mechanical boost gauge.
Newbie
Joined: Jul 2019
Posts: 25
Likes: 2
From: Cyprus
I think and log everything in metric...
I only hold 280kPa from 2600-5000 RPM in top gear in cold weather (later than 2600 in lower gears!), which logs at about 280 load. I may peak at 290kPa, if it is higher I reduce the duty as I feel guilty about the conrods due to high cylinder pressures. I would run more on the same fuel in cold weather if I had the conrods changed. It is common to run over 2 bar (300kPa absolute, 29 PSI boost) of boost on 99 RON in the UK with uprated conrods. When I've spiked higher than my intended boost the car has obviously more torque, I just worry about the conrods.
So 280kPa or 280 load is about 26 PSI on my setup.
I only hold 280kPa from 2600-5000 RPM in top gear in cold weather (later than 2600 in lower gears!), which logs at about 280 load. I may peak at 290kPa, if it is higher I reduce the duty as I feel guilty about the conrods due to high cylinder pressures. I would run more on the same fuel in cold weather if I had the conrods changed. It is common to run over 2 bar (300kPa absolute, 29 PSI boost) of boost on 99 RON in the UK with uprated conrods. When I've spiked higher than my intended boost the car has obviously more torque, I just worry about the conrods.
So 280kPa or 280 load is about 26 PSI on my setup.
Thread
Thread Starter
Forum
Replies
Last Post
riceball777
Evo Engine / Turbo / Drivetrain
164
Feb 14, 2007 10:05 AM
gaijin
Evo Engine / Turbo / Drivetrain
2
Apr 27, 2006 11:04 AM
Warrtalon
Evo Engine / Turbo / Drivetrain
85
Nov 5, 2005 07:52 AM
