On my dash I've got the two buttons for defrost and ac
On my dash I've got the two buttons for defrost and ac the ac will not turn off and the defrost will not turn on well thay will but I've got to tap the button's and hold em watt is up with that can anyone relate or explain what I need to do to fix it
For max gains, cut the 2nd cat. Before the cat the piping is about 2 1/8" after the cat it drops down to 1 7/8" . I cut my secondary cat and went 2 14" from there back. So in essence its 2 1/4 from header back now. Best way to do it.
No need to retune for such a small change (besides, there is no real running available at a reasonable cost) yes UpRev is available, but for 6-800 dollars for a retune and very little gain, not worth it if you ask me.
You said it, HP and TQ gain. It's not crazy power on the versa, but when you have 109HP every 2-3 does help and makes the car more enjoyable to drive. The removal does add noise, but that can be fixed by adding a resonator such as magna flow, vibrant or any good brand straight thru one with out affecting the gains.
The OEM software is set in open loop for WFO throttle with the exhaust the way it comes from the factory. If you mod that and the exhaust does flow better to create more power you are then likely too lean as the fuel map was set for the amount of flow the car had before and not after. While the engine likely won't destroy quickly it CAN wear out faster if you stay in the throttle a lot. You may not be able to tell the lacking fuel at all but the engine can.
The injectors only reset for variable fuel a/f in closed loop not open, the latter fuel map is set in stone and does not change for mods. ECM picks up on it instantly, the O2 sensor reports leaner than before, but ONLY in open loop and why the unlearned think nothing has changed. The closed loop map likely has enough fuel to cover the slight difference, the injectors then readjust and driver goes on thinking things are fine.
Why they say to tune the software.
Some cars may not even run as well as they did before with cat gone, some about the same. Others depending on different design issues can really run better catless, and those are the ones that will give the most trouble if the software is not updated to reflect the missing cat. Some few can burn pistons pretty quick or shell them out from detonation due to missing fuel.
Hi, this is some info for anyone looking to swap out the MR18DE with its bigger sibbling the MR20DE.
Whats Prompted This
I did this because my MR18 started to fail at about 70K miles (only 2 years old). At first it sounded like a diesel at startup, but after about another 5K miles it sounded...
Edit: I did some searching before posting and didnt find much relating to this.
Fluid pressure sensor and shift solenoids were slowly going out when i purchased this car second hand. They failed one day and it wouldn’t drive; so I replaced the valve body after getting shift solenoids codes...
Hello guys, my fans are not coming on at opperating temperature. I originally thought i had an emissions issue to realizing somethings causing my cooling(radiator) fan not to power on, I have replaced both my thermostats and my ect sensor, have also pulled a fan from a junk yard, thought im...
I might have originally posted this in the wrong forum
I have a 2009 Versa 1.8 automatic transmission.
All problems seem to happen randomly, BUT, it seems that they are more pronounced when the car is hot (been running a while) or if I use 87 octane and not 93.
Not sure if related...