over 100%idc

[eric91gst]

Ok I have the mbc set at 15 psi with just a 190fp for fuel upgrades. I am still on the 14b. My idc's build up to over 100%. Isnt this kind of unheard of considering I have the 190fp and its not that high of boost. Would a boost leak be causing this. I am also getting 1 count of knock at about 3-4k and another around 5k, then it goes away. I am kind of set on the fact that it may be a boost leak. Does this seem reasonable.
-thanks

 

[boostnhard]

i would check anyway just for peace of mind

 

[eric91gst]

Well what else could it be? This is also on 94 octane. Also where is the link that shows you how to perform a boost leak test? Thank you

 

[boostnhard]

Well what else could it be? This is also on 94 octane. Also where is the link that shows you how to perform a boost leak test? Thank you

A little bit of research doesnt kill anyone!!!!!!

http://www.dsmtuners.com/forums/showthread.php?t=209898

you put it on you turbo inlet and with a comperssor you fill your system(make sure someone sits in the car and checks the boost gauge, so that it wont go past 15-20 psi. im asuuming you have an after market unit.)and listen for leaks (hissing) around you IC pipes, TB, injector lower seals, etc anywhere it hisses

 

[paul s]

With my t25 and rewired stock pump the IDC gets up to 90% at 16-17psi dropping off, so with 14b 100% sounds normal.

 

[eric91gst]

With my t25 and rewired stock pump the IDC gets up to 90% at 16-17psi dropping off, so with 14b 100% sounds normal.

-yeah but sometimes I get readings like 104%. I guess my real question is this a logger error or can the idc readings really be over 100%, and what could cause this?
-thank you

 

[paul s]

You can get over 100%, its not the best thing to do

 

[CanadianTSi]

The Injectors can physically only do 100% IDC, but the ECU can still demand more fuel than that, therefore IDC's higher than 100%

 

[eric91gst]

The Injectors can physically only do 100% IDC, but the ECU can still demand more fuel than that, therefore IDC's higher than 100%

-so what could be causing the ecu to demand more fuel like that. Could this be a boost leak like I previously stated?

 

[CanadianTSi]

Could be a boost leak, could also be the fact that the 14b is easily capable of flowing more air than 450's can support.

 

[vintagemuscle]

I would bet you have a boost leak. At 15psi you shouldn't be seeing 100% idc's with the 14b, unless you have a very rich tune.

 

[oldman]

could also be the fact that the 14b is easily capable of flowing more air than 450's can support.

Unlikely at 15psi, especially on a near stock everything else setup.