MJTru

Im not to sure, and from what i see you cant have the power fc self tune the fuel. I use a AEM wide band with a 5v output i use that, and hook it up to my data logger then log the AFR's remember to calibrate the channel. Thats about the only way i know to do it. Log then work out the correction, then input it. I'm not sure of what a a narrow band simulation is. Sorry will google it though

Hmm. I found it. Seems like the gts4 has no fuel pump module All i did was cut 2 wires from the ecu plug. These wires are for fuel pump module 1 and 2. Only the fuel pump relay was left intact. Took it for a drive and its all good. The car now eat up boost. I hope this info helps someone later on.

Hi guys. I finally got this rb26 started. Before i had another rb26 in it running a power fc d jetro and it ran fine. This time im using a l jetro from a r33 (power fc) seems all the same other than oxygen sensors and afm ramp setting from what i saw online right here on this site. Here is whats happening. At about 4500 rpms the car dies. Like a fuel cut or somthing. It falls flat on its face kind of like when a traction control system kills the power on a car that has that system. The car idles fine runs great, all values seems right on the power fc hand held. Afm at 4500 is at 3.02 volts the tps is reading good and progressively goes up as i step on the gas, afm are at .245 volts with engine off and .956 at idle. I should add that im not running any oxygen sensors, and its on open loop, im also using 2 rb25 3 wire afm's. Everything just seems fine until boost comes in. So what all can cause fuel cut.??

What size down pipe did you guys running? Im using what hoset calls a 12cm rear housing and wondering if the 16cm would be much better on this rb26. Im very close to starting up and tuning. The original turbo has a 2.5" outlet on the hot side. I see they offer a 3" its for 139(5 bolt flange) and the rear 16cm housing is 169. I wonder which one to go with. For the extra 39 dollars i figure if the housing gives more power (16cm) potential and it already comes with 3" vband outlet. Hmmmm -_-

Hmm. Intresting mate. Im going down this same road, but my hx35 is on a rb26. Wounder how it will work. I've been considering a new turbo but willing to give this a try first. Did you ever get this sorted out??

I have seem a DOC Racing manifolds and there very well made. Looks like the yanks stole the design from 6 boost. Collector wise. But it's made of high quality steal and very very clean inside. On level with Kyle's stuff. Its a bit more in price that's what would be what wins me over. But it would be intresting to see someone try one out here. +6boost all the way.

Oh i cant use e85 fuel not avalible here. will that pump work for petrol. Or.race fuel Opps i just noticed that you mentioned petrol

The 416lph is a drop intank pump. Do they fit in the original r32 gtr fuel pump location. Or is there some sort of modification thats needed. I know the 255 in one of my silvias were a perfect fit. Walbro provided all the necessary parts with the pump. Thanks ill look up the 416lph.

Not meaning to run on about this or anything here. I spent some time looking at fuel cell venting. Not trying to go off topic here, but all principles can be used here. Most drag racing set up calls for a roll over valve and NHRA require to loops in the vent hose. Then they vent it out the trunks floor or where ever some use a filter at the end. This is straight to atmosphere. Is there anyway i can set my syatem up to burn this up. Like the original system. Seems like ill have to make some sort of evap system to do this. Or is it normal for these guys to just vent it outside. ?? From what i see the roll over vent is just a ball thats stops the fuel from just pooring out when upside down via the vent line, but gas vapors will still get into the atmosphere. Damn i got rid of all my carbon canister stuff:(

Lol. GTSBoy. Never seen you this way mate. If i was there i'd buy you a beer mate. Pressure building

Wow Didn't even know walbo made a 400lph pump. Is this an intank option.???

Thanks mate.

Understand. Mixed the two up. ^_^ How do drag cars deal with it using a fuel cell for exsample. On like 100% Of fuel cells have two lower out let and two on the top. How do you control the vacuum that the fuel pump will creat sucking the fuel out. Ive always wondered about this. Keeping in mind fuel vapors. Im thinking some kind of one way valve. Just a guess though.

Hmm i was referring to the pcv valve not the egr. I've yet to see an rb with an egr valve. The pcv (positive crank case ventilation) from what i seen is nasty stuff that carries oil particals as well. Plumbing this back in wouldn't kill power as its pre burnt gas? I know it leaves a light film of nasty, what ever you want to call it, all over the intake system. I have attached a photo of where the canister vents a very very small amout of this gas if not burnt completely. It vents it in the chasis. Now that can be nice and oil. Lol. Protects from rust.

Is it possible to vent these gas outside rather than burning it up in the motor. Doesnt this method cause a build up of black muck in the whole intake system. (Including turbo)??

Front turbo drian. Way up away from oil.

Ive used on rb26 the front turbo drain as a vent for excessive blow by. I also have the head drain going to the rear turbo drain. Wonder how this will work. Thinking that now the rear head drain /vent will do its job letting oil drain or vent blowby in eather direction. Will see how it goes. I cant begin to see the nightmare these oiling issues would cause in drifting. Guys do it tho. I have heard of using a scavenging pump to aid in this phenomena but never really seen a clear depictions of it.

Almost done guys. Quick question. Would a walbo pump support 500hp at max. Im looking for a fuel pump thats intank but not to expensive. Was looking at walbo GSS342. I guess i should ask what does the oem pump support as well:unsure: Thanks in advance

What type of car.

I started to look at the flow charts for the holset and a gtx35r. Looks like there will be about 15 to 20 LB/Minute difference from about 22 psi. Im trying to compare it to my r33 gtr thats running twin z32 afm with gtx3582r turbo. Damn i wish i had a better turbo laying around.

Im wrong twin rb25 afm and even better would be twin z32 afm would be best.

Thanks for that mate. These are in rwkw. Simple conversation. Looks like twin r32 afm will max out but could work, but at there limit. Hmmm. Funny to see that a singal z32 is at 350 figure twin would be at 700 but its at 511 in twin set up. And twin q45 is at 600. Is this wright????

The motor is freshly built. All stock other than oil mods and acl race bearings, mls head gasket. I did it all with spare parts around the yard. Doesnt mean i just want to just blow it up. Lol. I will tho. Kml. Im sure ill figure it all out tho mate. Worst case is ill just run twin z32. But was wondering as i have like 12 oem afm for gtr's. Oh internal parts are all new. Not old.

Hmm. Yes i agree a 100% small a** holset hx35. This car was put together for just fun. Nothing to serious.

Just so things are clear