Is it normal for the DSC light to come on at high boost levels? Anything over 18# it triggers the light and stays on until I shut the car off. I seem to remember but not too well that it was normal but not sure.

 

off topic, but how are you getting 18 psi?

 

I keep getting the same question, 16% under drive pulley and a 2% crank pulley. Boost gauge

can only achieve this in the winter with colder denser air, summer time can only get 18 and on really hot and humid days 16.

 

i have 17% plus 2% overdrive.. i get 14 max , scorpion headers de cat .. borla exhaust , catcam bytetronik tune as well..

 

I don’t know what to tell you? I have a Miltek full exhaust 380cc injectors ported intake and a custom tune. Every car will be different.

 

Yeah. I think it’s the cam. Also got 550 injectors.

hows your IAT? What intercooler you have?

 

don’t know and stock, did have a Airtek but didn’t perform as good as stock

 

Off topic but on my setup with just 17% pulley but larger ic, tpr2 head , ns1 cam , ported manifold , ported headers and no cat and a dt bpv.. with this cold air i can get 17.5 psi even.

 

I have read that it does trip some light after a certain boost level but I cannot confirm what light or code ect it does throw . But I do know they do. Lol I was kinda worried seeing 17.5 but that was once as it was like 11 degrees out and crisp. I doubt ille ever have it out in that cold again . Just luck we've had no salt on the roads ( up until yesterday atleast ) and decent weather so far..

 

I’m not here to compare it is what it is just trying to figure out what the issue is.

 

nor am I, just stating that fir the other guy asking about boost levels . Every cars different even down to how they've aged so its like comparing apples to oranges .

 

yes I just recently confirmed that there is a overboost that will trigger the DSC light anything over 18#. Having my tuner rewrite my tune to turn it off

 

I would love to know if that is a real psi reading, your mods should not make that much boost, no where near that much boost unless something is wrong like a plugged cat or muffler

 

Here is a video from today

 

If that were my car I would pull the timing cover off and check the timing marks for the cam that will also cause a high boost air and will really limit power. If the cam timing is right I would then pull off the header and stick a camera down at to see if the cat is plugged

 

There is no cat and only hits this boost in the winter.
Summer time I only get 16-17 and if it’s real humid 14

 

Can you explain further about the timing marks? It runs very strong right now.

 

doesn't matter if it's winter that's still more boost than your mods should possibly make.

If you pull the crank damper and the timing cover off there are marks on the crankshaft and on the cam gear you have to spin the car a hell of a lot of times eventually they line up with colored chain links You're probably off one tooth
I had the same problem when I installed my PH3 somehow I ended up one tooth off boost was crazy high, The cylinder compression psi was too low, didn't make as much power as it should have

 

ive never had the internals apart and did replace the damper with a ATI but that would matter since there’s no key way. Are you saying chain could have jumped a tooth?

 

Has has your car always been this way?

I've had the pleasure of dealing with a chain that was off one tooth during a cam install and I had the pleasure of a chain jumping when the car was idling at like 100 RPM and it was about to stall it made a pop backfire sound and it jumped a tooth

 

I’ve had it for two years and when it gets cold out the boost goes up a couple pounds but like I say in the summer if it’s a hot and humid day all I can get is 16#. So to your question yes it’s always been this way after I installed the pulley and damper which was right after I bought it.

 

a little boost increase is normal, 18psi hitting ecu limp is not, definitely not with a M45 and a cam unless you had like a 25 % supercharger lol

 

That made sense though. Prolly when the cam installed it jumped a tooth.

had to buy the cam tool and made sure i was careful when i did mine. Heard stories about this. Good luck man. Hope you can find the culprit.

 

cam is stock, thanks