Jump to content
SAU Community

Recommended Posts

Nah Marko. The 5's and all the pipe work will go on a shelf in the garage all wrapped up. The condition is that this precision must beat the -5's in all areas!

Jez matched the -7's with a 6262, you'd think I can match -5'a with the next size up.

Also, spoken to Yavuz about engineering it AND passing emissions. That was another 'condition'. Both he said would be no problem.

the turbo size doesnt matter much for emissions testing, bigger is better in that regard as it doesnt come on boost during the test.

cams are another matter, you dont want big cams when going for an emissions test. good cat and some E85 will make passing pretty easy.

mine passed with the 3L and 35R on a euro3 cat.

Oh i know, but when a little SR is beating your -5 graph both down low and up high with one of these things, not to mention Jez's result it's really saying something.

If it's a huge flop then nothing is stopping from bolting the little baby -5's back on.

The overlay graphs from the other day seem to suggest there is not as much in it as everyone is saying, at least @ 20psi - and given you will run more with both...

Big call you are making here.

Lucky you still live with ya mum.

I reckon the -5s will fall over at 25-26psi and the PBT will b good for 30+!!!

f*k -5s....

Just because you can't fix your 40rwkw hole :thumbsup:

Plus for a car that gets street/daily driven running that type of boost is just asking for problems IMO. So much stress and pressure on the entire system... Not to mention if you do track days as the heat would also be a factor to consider. Hence all these Time Attack cars you see running 30psi+ are generally one-lap wonders before the heat sets in. You won't see them doing 5-10 hot laps :)

Just because you can't fix your 40rwkw hole :thumbsup:

I no, i mite one day come to like them if I can sort what ever is wrong with the dam things.

Anyone got any sudjustions ?

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

    • Well it wasn't as easy as I thought.... and it also wasn't in my original manual which I did end up finding. They discuss the process in the Nismo catalogue though and it requires slight machining. Page 145.  NISMO PARTS CATALOGUE 2020
    • I'm an idiot, my intercooler is rated for 1000hp. I had clicked on the wrong product. Knowing the delta P would be nice, but I'm doubtful I'll do it. Now as for an EMAP, that would be great and I'll get around to it eventually but from my findings in my last post, I'm considering a turbo swap now. 
    • You sir, big win tonight. Precision never supplied compressor maps in the past and Idk when they started, but it seems they only offer for a few of the older gen2's which is exactly what I have. I punched in some numbers and seem to have gone with the wrong turbo. 600-700whp isn't in the most efficient area and is close to the choke line. 800whp is well off the map. Punching the numbers into a 68mm gen2 turbo map is bang on in the center. Here I was thinking going smaller would shift the power band down, but in reality it would just make it so much worst due to my rev limit. I would have never thought. 
    • Increasing overlap will bring the torque down earlier (and make your idle sound sick lol). Worth a shot (if you dyno time) to experience a bit (providing you are confident your valves won't kiss your pistons). Is to just take off 5 degrees across the boosted area of the map, and then retard the exhaust cam let's say, 3 degrees at a time and then overlay all the runs with VCT on all the way and VCT off as soon as you make positive pressure. Ideally you would have a total of 6x overlays to looks at 0 exhaust & VCT off once manifold pressure is +ve 0 exhaust & VCT on all the way -5 exhaust & VCT off once manifold pressure is +ve -5 exhaust & VCT on all the way -10 exhaust & VCT off once manifold pressure is +ve -10 exhaust & VCT on all the way Just leave your O2 wideband closed loop on for all of the boost area & RPM, and hopefully there isn't too much fuel correction needed and the Haltech is fast enough to compensate (I do this, then apply the correction to the main table). Getting that overlay data should give you a good indication of what to aim for.
    • So, my main limitation here is that the car does not have an oil pressure sensor by default, just a switch. As part of my tune I bought an oil pressure sensor upgrade so I now have access to oil pressure levels and logging rather than just the boolean behaviour of the switch but this means I need to use the tuning app to display this value. So, this rules out using any other app on the iPad. The app will also flash when pressure drops which is a nice feature. I have replaced the centre screen with an Android one, which is awesome for Android Auto, but I think it might be too far away and out of my line of sight. I might add some gauges to it this weekend and just see. I guess if its just temp and oil pressure I can make them massive! 🤣  
×
×
  • Create New...