sr runs rich wont rev past 3500

[blazin_teg]

I recently installed a s13 sr20det blacktop in my 240sx. When I crank it up it runs very rich. I will smooth out when I unplug the maf sensor. I have tried a new maf, a new coolant temp sensor, another ecu, and checked for boost leaks. When I plug in the maf it runs very rich and lumpy. I drove it down the road and when it gets around 3000rpms it feels like it wants to pick up and go but when it hits 3500 it shuts down. If anyone has any ideas please let me know.

[tony96240sx]

sounds like a maf wiring issue..check for boost leaks also..make sure all the intercooler hoses are connected tight

[Okinawandrifter87]

what he said.. msglngth

[DALAZ_68]

i thought the whole limp loop (no MAF connected or bad MAF) was set to only rev up to 2500rpm...or is that on KA's only :duh:

[blazin_teg]

Well I found out the prob. maf ground wire wasnt ran to the ecu right. Now I have to put my sr fpr and get a better fuel filter its showing signs of lean up high. But I finally got it running now. Thanks

[unicoladron]

^--yo make sure you get a Z32 Fuel filter, preferably OEM Nissan.