Nissan 370Z Forum - View Single Post - How big of a nitrous shot can the stock fuel system support?

SG4247 · 11-12-2021, 05:54 PM

I ran a 100 shot on E85 with the stock pump.

When the nitrous system comes on, there was a big drop in fuel pressure that would lean the AF ratio for about .5 seconds - until the pump could recover. This is not a good thing.

On gas it would be easier, but the stock tank regulated pump system just doesnt work well for power adders.

So I got nervous about it and installed the Deutchworks pump and had the tune adjusted.

A 75 shot worked really well with the stock pump. Car hauled *** too. Ran several 11.90s and 11.80s.

11-12-2021, 05:54 PM	#3 (permalink)
SG4247 Track Member Join Date: Oct 2016 Location: OKC Posts: 786 Drives: 2010 touring Rep Power: 7842	I ran a 100 shot on E85 with the stock pump. When the nitrous system comes on, there was a big drop in fuel pressure that would lean the AF ratio for about .5 seconds - until the pump could recover. This is not a good thing. On gas it would be easier, but the stock tank regulated pump system just doesnt work well for power adders. So I got nervous about it and installed the Deutchworks pump and had the tune adjusted. A 75 shot worked really well with the stock pump. Car hauled *** too. Ran several 11.90s and 11.80s. __________________ NA on E85 - 12.402 @ 112 mph 100 shot E85 - 11.589 @ 117 mph JWT C2 cams rev Base Circle & Titan Valves Last edited by SG4247; 11-12-2021 at 06:02 PM.