I've managed to get it starting better now and increased throttle response by leaning up the settings a bit but the main problem im facing now is that im hitting some kind of cut out at 3krpm.

I tried changing the secondary staging as high as 4500, decreasing the pump2amount, increasing pump 1 and turning pump2stop to off because im using the TPS for load sensing but it doesn't do any good, still hits at 3k.

It makes a strange sound as well, almost as if its leaking boost. The ignition flutters/hesistates as well, doesn't build more then 1-2psi. You can hear the sound building as you get to that RPM. What should I be checking out?

Injectors are 550 high impedence primaries and 680 low impedence secondaries.

How can I access and modify the settings for the secondary injectors? Is changing the injector staging changing the start point of the secondaries? Thanks in advance.

 

Hi,
If you made a copy of your original pump values, cross reference them with the base map on the other tread and re-apply them.
Try setting your %stage at 45%-50%.
REVstg - 3500
MAPstg - 05"hg
Can you send me you timing values and load values so i can see where she may be going wrong. It sounds as though you are creating a "rev cut" due to being too rich and having the timing too retarded.

John
88 GT-R

Set you

 

Are you mad!!?
Using TPS for load on a forced induction engine?!


I'm incredibly suprised you havn't blown your motor yet.


Throttle Position/RPM is not proportional to load on a forced induction motor!!

Manifold pressure/RPM is muuuucccchh closer to the mark... You need to use that.

 

sounds like there may something else gonig on here as well. check to make sure you don't have an active boost cut or a rev limiter turned on.

and yes, definately set load to MAP or RPM, definately not TPS.

Ray

 

that happened to me when i first got mine going with the lt8. i had actually broken the conectors going to the secondaries where they pluged intot he injectors. therefore the injectors never recieved the signal. might want to check your connectors just incase.

 

calm down, before you go off at people you should know what you are talking about.

you can use Load=TPS on a turbo motor, it will use the TPS settings till the map sensor sees boost then it will swap to MAP,
it works very well and i have used to hundreds of times before,

Dale

 

Well, we identifyed a lot of the problems stemming from a bad vacuum source.

Now we've set the car back on MAP based sensing and I can rev over 4kRPM but it still runs very rich. Im just keeping my eyes open for a competent Microtech tuner in the area now.

 

Hey I have pretty much the same setup as you, but my car is running quite well. Do you need some help setting things up?

 

I'd really appreciate some help as I can't get a hold of DynoWorks who I've been continously referred too.

Where in South CA are you?

 

I'm over in Pasadena. I'm free this saturday around noon till 4 and maybe sunday. PM me your name and number or something and I'll give you a call asap.

 

I thought thats what the IDLmap was for?

My thought was that the LOAD option actually changed it only to TPS for the entire rev/pressure range.

Thats what my Digi pro manual says anyway, guess they must have changed it

 

digi's do it totally different, you have a totally seperate TPS mapping section and it dosent swap between tps and map

on the new ecus it swappes the vacuum settings in the load and idle maps to TPS %

dale