mysterious sr20det help

[nef_s14]

Whats going on everybody. I need your help so I will try and explain the best way possible. I have a 95 S14 with a S13 sr20det in it. Bone stock with minor upgrades, Greddy Fmic, Greddy bov, Greedy intake, Greddy down pipe and Greddy evo 2 exhaust. Turbo is stock and ecu and injectors. The issue is that when I reach 5th Gear, the rpm would reach about almost 4000 and my speedometer reads about 120 mph, in alreality im doing about 60 or 70 and the car acts up, like its starts to flutter and rumble sound, like if the injectors shut down, every other gear is fine good boost, but 5th gear low boost and fluttering or rumbling, only when speedometer reaches 120mph. Any idea in whats going on. Tss or vss is stock sr20det. Thanx for reading.

[battosaii930]

could be the stock VSS, you should use an s14 KA24 speed sensor on the s14 the s13 one does not read correctly on the s14 dash. anyway whats what i did with my s14 with s13 SR

[nef_s14]

Thanx for replying, I really hope the vss is the issue. So than its like the car was governed than, ith what might have been causing the injectors to shut down. Dude thanx I hope this is it.