Nez136

iTrader: (10)

Ever since its been getting cold outside at nights my car has been throwing the engine overboost code. i run 21 psi on the Greddy EBC without a boost spike, i even turned it down to 19 psi to see what happens and it still comes on...i've adjusted the MAF HZ to 2300 in the peramiters but still nothing changes. It will happen from a low RPM pull in 2nd gear and above. So what could it be?? Jack your input would nice as well....

Ichiban

iTrader: (3)

Although I do not have a UTEC, I was receiving this same code with an MBC set at 20 psi. I also turned it down and still received it.

joeymia

iTrader: (6)

p0234?

Nez136

iTrader: (10)

^Yep

joeymia

iTrader: (6)

I believe UTEC can't prevent that code from comming up... Do you have a aftermarket intake?

SoR

iTrader: (19)

With a MBC and stock MAF, when it gets cold outside you need to lower your boost because you get more air into the engine (it's denser). Or just re-tune your car.

Nez136

iTrader: (10)

i know the Utec can't prevent the code, im just wondering if its in the tuning..
yeah i have aftermarket intake, i have an HKS hard pipe w/ a cone filter, but i think im going to put the flower head filter back on

Nez136

iTrader: (10)

This i know, but when i use the datalogger it still says there is the same about of HZ going through the MAF

dryad001

iTrader: (27)

If you want I can take a look at it on tuesday night.

Nez136

iTrader: (10)

Just call me and let me know when your free, b/c i have to take my dog to the Vet tues or wed.

MalibuJack

iTrader: (5)

You can't really prevent the code from popping up, but it doesn't have any impact on the UTEC or the car. I get the same thing on some days..

The only time I don't get it is if I set my UTEC boost control to 19psi and then drop to 16psi at 4500rpm, which is basically what the stock setting would be.. But I use that for my map1 so I can pass an OBD-II check with no codes..

Nez136

iTrader: (10)

So even with a CEL on i won't loose HP?

Nez136

iTrader: (10)

What about buying one of those Creaders???? i heard those take care of the little CEL problems

joeymia

iTrader: (6)

Nope you won't loose anything... I get that code so often I don't even bother clearing it anymore.

SilverEvo8owner

iTrader: (3)

are you hitting fuel cut? I had the same thing with my stock injetors when i had issues with fuel cut. I had to upgrade to bigger injectors to get rid of it. Now i have system too lean CEL's. It's kinda hard to dodge CEL's when you start making power. I had like 7 codes and didnt lose any power