John Dixon

Cool, I'll knock one up when I get a chance.

Vinz, they felt really good. Obviously it's hard to say on an industrial estate, but they're certainly as good as the skyline stuff, if not better at the sort of speeds I was doing. TBH, the best thing about them was the pedal feel, which was really nice and solid. Don't know if that's to do with the brace you made up though or the brakes themselves - probably a bit of both.

I've got Koni shocks and Blitz springs on mine. Pretty nice combination. Not too firm and snatchy like some track oriented setups are but handles really nicely.

Huge difference it's hard to describe how much better they are. Much more actual stopping force but mainly they don't fade like the stock ones do. Best mod I ever did, gives you the confidence to use the power on twisties. I've got R34 but I think they're just the same, except painted gold and with different diameter mounting holes.

The newer one's much faster though, got about 150bhp more than the old one I think.

Steve mate, unless you've got rid of those Snow tyres you'd be a brave man to try any sort of acceleration :eek:

You need turbulance in the intake air flow to better mix the fuel and air. If it was laminar you'd end up with the 'outside' of the air stream having no fuel in it other than what diffused across as it entered the cylinder. Either that or there'd be rich and lean areas all across it. The geometry of the ports is usually also set up to direct the flow into the cylinder at an angle to encourage it to 'swirl' around and mix better. As the air speed increases flow will always go turbulent anyway regardless. I've never done any calc's on the Z's intake system but I'd imagine the amount of air going through there at more than light throttle will be enough to go past laminar

Isn't the 350Z significantly quicker round a track though?

There's E-Manage or Ash's Romulator which is an Eprom emulator with a PC front end, or full Motec/DTA ECU's etc. Having said that you don't need to swap chips really after the initial one unless you do fairly major mods. That's not to say you won't get better results with a mappable, you will - it's just wether you want to spend the cash/time.

You're not kidding about the tyre pressures, a few Psi either way feels like a totally different car.

Hi Danny, Sure, I can appreciate you point, and at least you didn't start making personal attacks like some have in a similar situation! I think It's good DTA are willing to set up their stuff to work with the new I/F, I'll probably buy that version myself because as you say the amount of development etc. that's gone into it has given a very nice product. Cheers John

Could be a worn HICAS arm or ball joint. Gives the same symptoms as worn track rod end, but at the back.

Danny, I didn't post this as a build your own conZult then rip off DTA's software. Some people (myself included) just like playing with this stuff. It's always nice to know what's happening. As for the reverse engineering, I couldn't comment but it's a pretty simple interface and I'm sure hitachi give specs for the 6303 so it wouldn't have been too difficult to work out. I don't think this will really affect DTA/Conzult too much as there will always be people who don't want to do the work themselves and they will use your product. I wasn't looking at it for the conZult functionallity anyway, I just want to pull AFR voltage/RPM into software to use with my Romulator real time mapping s/ware to give real time trace. Cheers John

Info Here for anyone who wants to mess around with this: http://www.users.bigpond.com/webspace/plms/ Basically you can bulid a serial interface for the Consult port then mess around with it from code. Trying to tie it in for real time trace on mapping at the minute :D

Nice one Leigh, who said all you arty types were useless ...

The fuel maps compensate for both load and RPM, so the amount of fuel injected is correct for both conditions. That means at 2500rpm, the amount of fuel injected will rise dependant on throttle opening. There is a throttle enrichment table which will enrich the mixture for a short time on opening, dependant on the angle the pedal is moved through and how quickly (like an accelerator pump on a carb). The idea of this is to give a quick 'blip' of fuel to get carried into the engine untill the air speed picks up enough to bring the rest in. My guess would be that the effect is related to this, although I can't say I've ever noticed it on mine. Wonder if it's just because if you hit it once it's already spooling it feels so much more responsive that it tricks you into thinking it's faster?

Good luck Leigh :D

Depends on the power you're running really. Boost pressure is really not the issue, it's the cylinder pressure that's generated that maters and more power = more cylinder pressure.

NGK ZFR7F-11 gapped to 0.8mm. One heat range colder and work fine for £2 each. Got to change them every 3000miles or so though. All the big tuned Jap cars run these and so do speciality Z / GR Racing in their demonstrators.

Cheeky git, I wanted to know because I was going to try to make a breather system up!

For R34 brakes they're too narrow too. You need to drill the hub carriers out to 14mm to fit them.

Leigh, I might be up for the group buy, finances allowing. Chris, are the greddy ones a direct fit, and if so can you get latency data etc.

I'll dig it out and mail it to you tonight. I was going to ask you some questions about it anyway, seeing as you're the guru on this stuff :D Cheers

I'd have thought you'd have made your own Si! Seriously though, the serial conversion bit is nothing, I've got a circuit diagram somewhere, a bit of software and off you go.

Peter, try RMS in Prestwick, they will make you a system to your spec pretty cheap. They did a custom downpipe for my 205 and it was really nice. Either that or get a JP one from grasshopper, they will put the centre boxes in if you want and cheapish too