Thread: SR 20ve leans out in high rpm

ok here is my setup: Sr20ve,n1 cams,ssac with 3" exhaust...
tried tuning the car on the dyno some time ago and realized the car was very lean,changed the pump on the spot (had in a stock sr20 pump,changed to a bosch) same problem,installed a walbro 255 today along with an aem wideband car is still leaning out,wen i say lean i mean 17.1 to --- on the aem ...tried another distributor also ,sometimes it also flutters in high rpm in 1st and 2nd gears..any suggestions
i made a video

vvl lean video by sharktem | Photobucket

what ECU, MAF, injectors, FPR?

custom chipped ecu
stock ve maf
stock injectors
stock fpr

N1 cams with stock springs?

Have you:

1) monitored fuel pressure while running up to higher RPM?
2) changed fuel filter?
3) added fuel in the fuel map at RPMs after your cams switch over?

Check your exhaust too make sure you don't have any cracks in the header too.

Does a leak on exhaust make less hp

What does it have to do with his problem?

1)i have a fuel pressure gauge installed under the hood,cant see @ high rpm cuz of the launch control. its ok @ idle

2) yes...gonna change it again today

3) alot of fuel!

had a leak wen i just installed the ssac,the car wasnt fluttering then,fixed the leak though,this problem (fluttering) started just weeks ago...so no exhaust leak