Nice numbers! How much boost are you running?

 

The tuner should know better. Anything over 80-85% is danger zone. Injectors become unstable and can stick open or overheat and stick close! Also if your that high on your idc% and then drive in weather say 20deg cooler - boom! It has happened before. Get the 1300's so you have margin bro.

 

Thanks Jaraxle, I'm well aware of the IDC. But I am not running that map as a daily. That said I am closer to 88% on the daily.

 

I 100% disagree with this statement. 80-85% as logged in Evoscan is just fine. So is 90%. 95% is arguably fine as well.

I ran 95% IDC on my track Evo 8 for almost nine years with zero issues, track, summer, winter snow, sea level to 7,500ft and back again.

I have run 90-94% on my Evo 10 for two years, track, summer, winter snow, sea level to 7,500ft and back again with zero issues.

I have tuned and campaigned lap record setting Evos with evoscan logged 85-95% IDC with no issues for 10+ years.

That said, margin is always a good thing, but those type of logged in Evoscan IDC are just fine (key being logged in Evoscan).

It's not luck, it's just understanding the tool being used to log and actual mechanical limits.

 

I can't speak to EvoScan specifically. Maybe that is where I am not understanding. But in general IDC% should not be over 90%.

From Injector Dynamics (response to question on the subject):
http://www.hptuners.com/forum/showth...cycle-question
"As the duty cycle exceeds 90% the flow vs pulsewidth curve gradually deviates from a straight line as it delivers more fuel than is defined by our IFR and offset values."

From Deatschwerks:
*Limit maximum injector duty cycle to less than 90% for safe operation.
http://www.deatschwerks.com/resource...tor-calculator

From Fuel Injector Clinic:
"Fuel Injector Clinic recommends a maximum duty cycle of 90%"
http://fuelinjectorclinic.com/flow-calculator

I don't doubt you got a way with it (running over 90% IDC). It just isn't a good practice because they don't operate predictably at all times above 90%. These three big injector companies are all saying the same thing. I know a guy who was tuned at 96% IDC in the summer. Took his car out in the winter and CA-BOOM. (the tuner sort-of warned him). There wasn't enough injector left for the increase in air with the cold weather.

I am just trying to help someone not have that happen to them.

~Jaraxle

 

Which is the reason for my last two sentences in my original post. I 100% agree with the 90%, at the injector.

 

Oh sorry my bad!