Jump to content
SAU Community

Recommended Posts

  • Replies 57
  • Created
  • Last Reply

Top Posters In This Topic

Still having troubles? Ok.. just looking at this, few things occur to me.. but i could be completely wrong.

It sounds like you're not actually getting enough pressure to the injectors in the first place, and that sems to be the source. Even stock N/a injectors should be enough to run a little boost. Have you checked the fuel pressure at the rail, and is within range ? May be useful to rig up a pressure tester to the rail and see what you're getting. If you're not getting the required pressure in, the injectors won't be working correctly and hence may reach max cycle prematurely. Also, check your fuel pressure reg? is there any difference between the stock fuel pressure reg, and say the turbo thing. Again, the lack of pressure to the rail thing springs to mind.

Also the other is to check the source of course, and that is the fuel pump itself. Are there differences between the n/a fuel pump and turbo fuel pump in terms of flow? I know on like the GTS R33 there can be a difference.

Lastly, the AFM signal and when its maxing out is a bit of a telling sign. You tried other AFMs? it seems similar to the circumstances reached when you max out a stock GTS-T AFM when you hit the 220rwkw mark (and hence go for a Z32) when it can *appear* the injectors are maxing out .. and with the emanage, i believe you need a separate injector harness to be able to control/dictate the injector pulse rate which will be important in this situation to override the ECU's injector timings.

.. so overall it sounds more like other factors than the injectors at work here.. and it may just be the end result of them maxing out that is the most obvious.

Hope that might be some food for thought, if you haven't already gone through it all (probably have :()

p.s. thanks for the toulene!

The new injectors are in and It's now running VERY rich...so looks like it was just the stock ones not having the balls. My AFM is the turbo one anyway so not a problem...I've also got the injector harness hooked up.

The fuel pump is capable of flowing the pressure, also the fuel rail is up to the job.

The second the 385cc injectors were in, everything seemed to be OK...Thursday will be the final check on the dyno and with A/F ratios.

Dan

A few pics I quickly took, excuse the inch of dirt in the engine bay :D

I can honestly say even driving the car around at less than 3000rpm (to prevent any misadventure until full tune) it would still out perform the standard car revving the balls off it!

  • 4 weeks later...
  • 2 weeks later...

Hello Dan. Very intersested in what you have done as I would like to do exactly the same thing with my R34. Bought it in December and thought I could just whack a turbo on it but told it would be better to do an engine swap. Have you posted outcome of the operation and procedure.

Any info would be greatly appreciated.

  • 2 weeks later...
  • 3 weeks later...
  • 3 months later...

Heya, got on the dyno, but was getting some bad timing retarding happening...waiting for my ignition harness to arrive for the e-manage.....then I can sort out the timing spikes back to something a bit less advanced. Will try and do it in time for the Mercury Motorsport Dyno weekend.'

I'm suprised your insurance was against the idea...my insurance didn't increase at all.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...