k31th less WHY; more WOT Site Developer 28,870 Member For: 16y 6m 9d Gender: Male Location: Melbourne Posted 13/02/15 02:52 AM Share Posted 13/02/15 02:52 AM can you say if it's on the tuning side or hardware side (or both)? Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 19d Posted 13/02/15 05:24 AM Share Posted 13/02/15 05:24 AM People use bigger map sensors when putting a turbo on e series then do what you guys are saying of basically fooling the ecu into thinking its got 7psi when really it has 14 but by the time you work out the voltage vs pressure of both map sensors then having to remember what each number actually coresponds to is a lot of work and usually people give up.Sent from my iPhone using Tapatalk 1 Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 19d Posted 13/02/15 05:44 AM Share Posted 13/02/15 05:44 AM The other thing of people driving cars around with pegged maps mean they will have to disable the overboost function so when a boost control line blows off, the ecu has no way of cutting the motor if it overboosts. My best mates car that I have been tuning lately is an example haltech ps2000 ecu 2bar internal map max boost the ecu can read is 22psi but we have it running around 24psi atm. Boost control line blew off last week when we were doing powerskids lucky no damage was done due to we only have a 7psi spring in the wastegate then using the boost controller to get it to 24psi that when the line blew off the exhaust manifold pressure was able to push the waste gate open before it over boosted (with no lines on the wastegate it spikes to about 20psi then tapers off to around 17psi at higher rpm) had this had a bigger waste gate spring say 14 psi it probably would have spiked to 30psi which the stock El falcon motor would have probably thrown a Rod out the side of block and been the end of the motor. Just one thing I notice some people don't think about when they talk about having the map pegged and the car still runs fine but could be the one safety feature that's save a motor.Sent from my iPhone using Tapatalk 1 Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 26d Gender: Male Location: Perth Posted 13/02/15 06:02 AM Share Posted 13/02/15 06:02 AM Correct. Hence my love for Eboost2's on cars that are pegging the MAP. 1 Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,870 Member For: 16y 6m 9d Gender: Male Location: Melbourne Posted 13/02/15 06:04 AM Share Posted 13/02/15 06:04 AM 60PSI capable FTW, right? Link to comment Share on other sites More sharing options...
Duz360 New Member 5 Member For: 9y 8m 16d Gender: Male Location: Albion park nsw Posted 13/02/15 06:24 AM Author Share Posted 13/02/15 06:24 AM My gate is a tial so I'm guessing this is not my issue thanks guys Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 26d Gender: Male Location: Perth Posted 13/02/15 06:28 AM Share Posted 13/02/15 06:28 AM 60PSI capable FTW, right?If you apply a correction factor of 1.5 yeah sure 60psi...why not? Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,870 Member For: 16y 6m 9d Gender: Male Location: Melbourne Posted 13/02/15 06:30 AM Share Posted 13/02/15 06:30 AM (edited) Edit... sorry, I couldn't remember what hte max boost of an eboost2 was 40PSI then.My gate is a tial so I'm guessing this is not my issue thanks guysFollow my first post, then! Unless your tuner has tuned the car to suit a low boost spring that uses boost pressure to hold the gate closed then plumb it up like Ralph's picture. Edited 13/02/15 06:32 AM by k31th Link to comment Share on other sites More sharing options...
eff xr6t Member 569 Member For: 11y 19d Posted 13/02/15 06:42 AM Share Posted 13/02/15 06:42 AM Correct. Hence my love for Eboost2's on cars that are pegging the MAP.Yeh overboost is definetly a good safeguard. I haven't looked into eboosts really that much so curious how they go about acting to a overboost do they just stop sending a duty cycle to the boost control solenoid or do they have a way of cutting the engine?Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 26d Gender: Male Location: Perth Posted 13/02/15 07:11 AM Share Posted 13/02/15 07:11 AM The stop bleeding boost from the solenoid until the boost pressure has reached half of the overboost shut value. Typically I set the Value 2psi higher than Desired boost and this helps prevent boost cut due to momentary boost spikes (ie on WOT shifts in a ZF car when the Pcm pulls timing) Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now