what you guys suggest ?

b12boi · Oct 13th, 2004, 11:52 PM

ok my airflow sensor is bad so i have to get a new one so i was thinking if i put a QG18de airflow would that make a difference in power ?
i was also thinking if i get a QG18de ecu and i install it would it also make a difference ? is it worth it ?

i am getting the both items free.
i have a nissan n16 QG16de .

**chimmike** · Oct 13th, 2004, 11:53 PM

a qg18 ecu won't work with the qg16, and the larger MAF won't gain any power.

b12boi · Oct 14th, 2004, 12:14 AM

Quote:

Originally Posted by chimmike

a qg18 ecu won't work with the qg16, and the larger MAF won't gain any power.

my neighbour put a QG16de ecu on his QG15de nissan wingroad and it worked ...i did not notice any difference .

what ecu / maf i can use in my car to gain power ?
my car chages gears at 6000rmp and it redlines at 62000rpm . and it sucks !

oh and my maf voltage reading was 1.38v - is that good or bad ? because someone told me that my maf needs to be changed .

**chimmike** · Oct 14th, 2004, 12:23 AM

no MAF will give you more power, and you can't just throw in any ecu to get power, it doesn't work that way.

b12boi · Oct 14th, 2004, 01:54 PM

ok how to kno if your maf sensor is going bad ?
my machanic told me that my maf sensor is going bad and he is getting different voltage reading on his computer . i think he is getting something like 1.38 volts and he suppose to be getting 1.28 .

well i called the dealership today and they told me that the only way they are changing the maf sensor is if the vehicle is cutting off ............

**chimmike** · Oct 14th, 2004, 02:03 PM

the MAF voltage is going to vary.

if the MAF is bad, you'll know it. the car won't run right, or at all.

niky · Oct 14th, 2004, 02:57 PM

Quote:

Originally Posted by b12boi

my neighbour put a QG16de ecu on his QG15de nissan wingroad and it worked ...i did not notice any difference .

the QG16 and the QG15 aren't really that different from each other, but the fuel mapping of the QG18 will definitely be off.

kaizer · Jul 13th, 2005, 06:48 AM

Sorry to jump in, but I thought QG16 and QG18 using the same MAF sensor? There were discussion on using QG25 *I think* from the X-trail for better flow, but heavy recalibration is needed to make it run smoothly?

From the looks of it, I don't think the stock MAF sensor is the bottleneck, a better bet would be the tiny throttle body?

Please correct me if I'm wrong, thanks.