Mapping a super charged car???
#1
PassionFord Post Troll
Thread Starter
Mapping a super charged car???
After laughing at a mate trying to start and manouvre whilst cold his latest purchase into his workshop i've agreed to try and sort the mapping out for him.
The starting and warmup enrichments shouldn't be too hard to fix but never having mapped a supercharged car before i've had to have a little think about the main maps.
The super charger on the car is an Eaton M90 displacement type rather than the centrafugal rotrex type. My question is, being a displacement type charger will the engine have a linear relationship engine speed, throttle angle and fuel requirement? I'm thinking it will do, am i right??
If so should i map using alpha n rather than the speed density algorithm that i would usually use for the main tables on a forced induction engine?
Cheers,
Doug.
The starting and warmup enrichments shouldn't be too hard to fix but never having mapped a supercharged car before i've had to have a little think about the main maps.
The super charger on the car is an Eaton M90 displacement type rather than the centrafugal rotrex type. My question is, being a displacement type charger will the engine have a linear relationship engine speed, throttle angle and fuel requirement? I'm thinking it will do, am i right??
If so should i map using alpha n rather than the speed density algorithm that i would usually use for the main tables on a forced induction engine?
Cheers,
Doug.
#5
PassionFord Post Whore!!
I have mapped a couple with vortec superchargers, 800hp and 880ftlb and the other was around 1500hp not dyno'd only mapped on drag strip,
Mapped the same way as a turbo.
Mark
Mapped the same way as a turbo.
Mark
#7
PassionFord Post Troll
Thread Starter
Trending Topics
#8
PassionFord Post Troll
Thread Starter
The problem is this is a displacement type Eaton (off a Aston Martin apparently).
#16
PassionFord Post Troll
Thread Starter
No, but its nothing special to look at though and the Sc installation looks a bit ropey.
I'm gonna do a leak test on the inlet side as i'm pretty sure some of the fabricated parts will be leaking.
I'm gonna do a leak test on the inlet side as i'm pretty sure some of the fabricated parts will be leaking.
#17
PassionFord Post Troll
Thread Starter
Oh well. I'll just give it a go how the currant map is set up. Don't want to get too involved as i feel it may be a bit of a problem pit and i'm short on time these days.
#19
BANNED
BANNED
iTrader: (1)
Join Date: Jul 2003
Location: Wiltshire
Posts: 12,483
Likes: 0
Received 0 Likes
on
0 Posts
I mapped an XR3i using a sprintex surpercharger many years ago.
I use a MAP sensor in the inlet manifold for load sensing which worked fine.
However, the TPS enrichment parameters neede extra work due to the pipe lengths and delays in the air getting through the charger when the throttle was snapped open.
This lead to too much fuel initially !!!
As for when the throttle snaps shut, that isnt a problem as you just set a fuel cut off on TPS as normal
I use a MAP sensor in the inlet manifold for load sensing which worked fine.
However, the TPS enrichment parameters neede extra work due to the pipe lengths and delays in the air getting through the charger when the throttle was snapped open.
This lead to too much fuel initially !!!
As for when the throttle snaps shut, that isnt a problem as you just set a fuel cut off on TPS as normal
Thread
Thread Starter
Forum
Replies
Last Post