sr20det has zero power, I need advice. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

wesismyhero · 11-17-2015, 08:49 PM

So I recently got my project car running. When I got it it was a mess, half assed and with a bunch of random parts laying around. I frankensteined everything together and finally got it running. It will idle perfectly all day long at 900 rpm once it warms up. When I try to drive it down the road, it has zero power, barely enough to move when floored. In neutral it will rev to between 4500 and 5000. I have changed the MAF, o2 sensor, knock sensor, plugs (NGK BKR6E) set timing, checked voltage on tps, checked compression (165-175 on all), checked fuel pressure,basically everything but a new ecu. Does anyone have any ideas?
Mods to the car are
Freddy intake manifold
Sard fuel rail and 550cc injectors
Aem fuel pump
FMIC
Fujita intake
Isis turbo manifold and fuel pressure regulator
Chase bay's fuel lines
Brian Brower 264 cams
TRust 3 inch downpipe

derass · 11-17-2015, 08:56 PM

What ECU are you using? If it's not something that's been programmed for those larger injectors, that's likely the problem.

wesismyhero · 11-17-2015, 08:58 PM

Stock ecu. I was just trying to get it running first. I may switch to the stocks and see if it helps.

KAT-PWR · 11-17-2015, 09:22 PM

coolant temp sensor?

wesismyhero · 11-17-2015, 09:22 PM

It's not throwing any codes on the ecu.

silviamang · 11-17-2015, 10:31 PM

What do your plugs look like?

wesismyhero · 11-17-2015, 10:54 PM

Brownish black. Not wet and not really fuel smell. What I would consider normal.

coupesallday! · 11-17-2015, 11:13 PM

Is the clutch good? lol

e1_griego · 11-17-2015, 11:16 PM

You're running 550s on a stock ecu?

That doesn't work.

wesismyhero · 11-17-2015, 11:21 PM

New clutch.

teh smithers · 11-18-2015, 12:42 AM

Get your ECU flashed, or get a programmable one and get it tuned. The stock ECU/tune can't handle the fuel system upgrades.

1988montecarloss · 11-19-2015, 10:29 PM

Quote:

Originally Posted by e1_griego

You're running 550s on a stock ecu?

That doesn't work.

this.

the ecu thinks its firing 370cc injectors

rwtf · 11-29-2015, 08:08 AM

Quote:

Originally Posted by wesismyhero

Stock ecu. I was just trying to get it running first. I may switch to the stocks and see if it helps.

11-17-2015, 08:49 PM	#1
wesismyhero Join Date: May 2012 Location: Ashland, Ky Age: 40 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	sr20det has zero power, I need advice. So I recently got my project car running. When I got it it was a mess, half assed and with a bunch of random parts laying around. I frankensteined everything together and finally got it running. It will idle perfectly all day long at 900 rpm once it warms up. When I try to drive it down the road, it has zero power, barely enough to move when floored. In neutral it will rev to between 4500 and 5000. I have changed the MAF, o2 sensor, knock sensor, plugs (NGK BKR6E) set timing, checked voltage on tps, checked compression (165-175 on all), checked fuel pressure,basically everything but a new ecu. Does anyone have any ideas? Mods to the car are Freddy intake manifold Sard fuel rail and 550cc injectors Aem fuel pump FMIC Fujita intake Isis turbo manifold and fuel pressure regulator Chase bay's fuel lines Brian Brower 264 cams TRust 3 inch downpipe

11-17-2015, 09:22 PM	#4
KAT-PWR Nissanaholic! Join Date: Dec 2011 Location: US Posts: 2,040 Trader Rating: (11) Rides Gallery: KAT-PWR Feedback Score: 11 reviews	coolant temp sensor? __________________ MRP Manufacturing

11-17-2015, 08:56 PM	#2
derass Zilvia FREAK! Join Date: Jun 2010 Location: Toronto, ON Age: 36 Posts: 1,182 Trader Rating: (0) Feedback Score: 0 reviews	What ECU are you using? If it's not something that's been programmed for those larger injectors, that's likely the problem.

11-17-2015, 08:58 PM	#3
wesismyhero Join Date: May 2012 Location: Ashland, Ky Age: 40 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	Stock ecu. I was just trying to get it running first. I may switch to the stocks and see if it helps.

11-17-2015, 10:31 PM	#6
silviamang Zilvia Junkie Join Date: Feb 2008 Location: Japan Posts: 318 Trader Rating: (2) Feedback Score: 2 reviews	What do your plugs look like?

11-17-2015, 10:54 PM	#7
wesismyhero Join Date: May 2012 Location: Ashland, Ky Age: 40 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	Brownish black. Not wet and not really fuel smell. What I would consider normal.

11-17-2015, 11:16 PM	#9
e1_griego Post Whore! Join Date: Sep 2004 Location: Independence, Ore. Age: 39 Posts: 2,711 Trader Rating: (24) Feedback Score: 24 reviews	You're running 550s on a stock ecu? That doesn't work.

11-17-2015, 11:21 PM	#10
wesismyhero Join Date: May 2012 Location: Ashland, Ky Age: 40 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	New clutch.

11-18-2015, 12:42 AM	#11
teh smithers Zilvia Junkie Join Date: Sep 2008 Location: Mute City Age: 31 Posts: 387 Trader Rating: (11) Feedback Score: 11 reviews	Get your ECU flashed, or get a programmable one and get it tuned. The stock ECU/tune can't handle the fuel system upgrades.