You shouldn't be getting any codes, even with a turbo setup. And yes, you can turn your idle back down to 750-800rpm. Also, if your ECU was in limp mode you wouldn't be able to rev past 3500rpm.

Without any datalogs it's hard to tell what the problem is. Either the ECU is pulling timing in the upper RPMs or the power curve is flattening out early. At what RPM would you say the power falls off? 4000, 4500, 5000, 5500? Also, do you have a wideband installed?

 

i would say 4500 maybe but even still at lower rpms the power is also gone. i guess the code is bc i have no cats and also the intake was sucking in a lot of heat. my widenband is broke and i need to send it in for replacement : (

 

First, get your wideband fixed ASAP. It is the most important gauge to have on a turbo car, second to a boost gauge.

Second, perform a compression test on your motor. If you're losing power then you might have issues with sealing in the combustion chamber.

Third, pull the negative cable off the battery to reset the ECU and let the car idle for 30 minutes after reconnecting it and starting it up.

If you think that power is falling off at 4500 or so, then that is a bit low. The Lancer powerband typically begins to fall around 5500 or so, just before redline. Do you have a Tactrix cable or a copy of your ECU's current ROM? Send me a copy to look at, if you want. My email is my forum name -at- gmail dot com.

 

That's all to this thread.

 

Ya I thought I remembered a while back you said you got a decomp headgasket but I just looked through your list on the first page and did not see anything on it?? If you didnt its possible you could have blown your stock head gasket.

 

My main concern looking over his part list is that there are no head studs listed. But I think he would've mentioned that in addition to the power lost there's smoke coming out of the exhaust.

In addition to what I said above, drain your oil to check for coolant and drain your coolant to check for oil to see if you popped your head gasket. Also, what do your spark plugs look like? Can you post a close up of what the electrodes look like on each?

 

ok first whats up with demolution??

second....oil and coolant are fine and i havnt blown my headgasket, nothing is smoking. its something to do with boost leak i think now bc yesterday i was boosting 1 pound the whole day even after letting the car sit and cool down. it didnt feel like 1 pound, more like 4 but still, something is messed up there. i used to spike 9 evertyime but now it never goes past 6 at all and it stayed at 1 yesterday through every gear. AANND it felt a little better too, i can spin though 2 again haha. still something is wrong but its not getting worse at least, only better. im going to get the parts from home depot today to test for boost leak!

i also want to say thanks to john from speed corps for putting the egg in my radiator and stopping the leak. haha i can drive again lol

by the way, does anyone have a radiator they need to get rid of. im going to try and evo 9 one this weekend.

spark plugs also look fine. greyish on the electrode

i got a tactrix cable and we will hopefully be doing that this weekend

also got a decomp test. what should it read
and i never mentioned anything about a decomp head gaskit bc i dont know much about that.
results will hopefully be here tomorrow whether its a boost leak or what so lemme get on it!

 

Ya Demolution is annoying unfortunately not rude enought to be kicked off. Anyways, what CFM is your fan zulu? I am looking at one that puts out 1550 just wanting to be sure thats enough.

 

im not sure, i have to find the box. didnt get the right fitting for my tester so im gonna have to get it tomorrow. need to know what compression i should be running though~

 

nice on your progress..

and yeah dommolu or whatever his name is a tool.. im have him on ignore

 

haha...ok so i did the compression test and they are sitting at 135, i think they are meant to be at 150 but i have 96000 miles so i think its alright.

 

Standard value is 234psi and the minimum limit is 170psi. Here is how to test compression according to the FSM:

 

ughh i didnt do any of that lol, i didnt unplug the sensor or remove all the plugs or push the gas pedal down. i guess thats gonna make a big difference right lol

 

If you don't unplug the crankshaft position sensor the injectors will be spitting fuel into the cylinders. You also don't have to hold down the gas pedal, you can just stick the handle end of a screwdriver into the throttle body to hold the plate open.

 

but do u think theres something majorly wrong if right now im only reading 135.