17psi Super-60 am I risking anything.. ?

[nocwage]

Z32 MAF, 450cc injectors

I'm rom tuning myself, most of the rev range I'm around 11.8:1 AFR and higher up (say 6000+) i'm dropping to around 10:1I'm running 17psi on a T3 super-60 (.48 exhaust housing), everything else is stock. (head gasket.. pistons.. everything)

You guys say this engine is robust.. but am I risking anything serious so far?

The timing is SLIGHTLY retarded from stock, I run 94 octane as well and I haven't heard ANY detonation ever.

Just looking for a little reassurance

[kapower06]

Damn 17psi off of a t3 super 60 (.48) should be damn close to about 330-350whp or so. But due to being so rich I would say those number could be a lil high. But either way I would say your at or around maximum duty cycle on those 450s...What kinda fuel pressure are you running? stock fpr? stock pump? As long as the tune is safe and you are using 94octane gas along with slightly less timing Id say your safe as long as you have a good intercooler and no leaks anywhere...

post up some pics of your set-up.

[boost_boy]

Damn 17psi off of a t3 super 60 (.48) should be damn close to about 330-350whp or so. But due to being so rich I would say those number could be a lil high. But either way I would say your at or around maximum duty cycle on those 450s...What kinda fuel pressure are you running? stock fpr? stock pump? As long as the tune is safe and you are using 94octane gas along with slightly less timing Id say your safe as long as you have a good intercooler and no leaks anywhere...

post up some pics of your set-up.

No where near those #s! Unless he's tuned this thing to be on the edge, he's safely in the 250ish whp area. Those 450cc injectors you guys speak so highly will be the death of your engines if you go recklessly chasing after 330+hp. Tuning is key here and you 're going to need a good amount and someone with some know-how to pull off at least 300whp. Right turbo, stretching-it on the injector side of the house.

Dee

[dash]

doubt you'd see 330-350 atw from a s60 @17psi. A peep at miata dynos will tell ya for sure, as its a popular turbo for the d.i.y. crew.

The condition of your ca18 and quality of tune will tell what the motor will endure. Rod bearings go out on bone stock motors often...yet, seen unopened CAs stand up to 24psi and ~400hp. Broad spectrum.

I've 'heard' it say that, when you hear audible detonation, most likely its too late. Some "tuners" invest in apparatus (headphones?) to detect early signs of det, if you have no way of monitoring knock electronically like the cheap dsm dataloggers etc.Perhaps worth considering if you plan on 'pushing' your setup and tuning skills further.Checked your EGTs with the timing retarded further ? Probably rob you of torque if pulled back too much also.

Enlightening to see a nico member having success with d.i.y. rom tuning. You could be our resident Dr Drift or Horsham now rising from the ashes. hehehHurry up will ya... so u can burn ours too

Seriously tho, good effort, good luck. Car really scoots now, I bet

[float_6969]

As others have stated, as long as you've got an uprated fuel pump and a FPR, you should be OK, but you're really at the limits of those 450's, unless you've jacked the fuel pressure way up.

[nocwage]

Right now my tires are the stock size so I dare not try to make 2nd gear pulls

It feels pretty quick A friend has an STi and my car is easily faster.

We've had crappy weather up here in Ontario Canuckistan so I haven't had a chance to start bringing that fueling back to 11.8 or so..

I'm curious what other people's experiences have been with the timing.. I'm building myself some 'headphones' but they only work so well.. has anyone else encountered detonation when upping the boost?

My motor only has 83,000km on it, I know because I imported the whole car.

[nocwage]

Oh yeah I have a walbro 255lph pump but I'm using the stock FPR.

I can monitor my AFR realtime.. I have a Zeitronix with the display.

[float_6969]

I fight detonation a lot, but I've increased the compression on my car as well. LOTS of retard unfortunatly....

[nocwage]

Also I didn't have to up the injector duty cycle and I actually am running very rich at WOT and high rpm so I'm not too worried about the injectors yet..They are supposedly 450 DSMs but when I did the 'conversion' I had to compensate up a lot to get the AFR to look normal (with the stock map but converted) and even then it goes REALLY rich at high RPM (like I said.. 10:1, if not lower..)If I convert my 'K' value backwards they really come out has 510 or so..But who knows how accurate THAT ishah

[float_6969]

I assume you're getting your AFR's from a wideband, right? If so, then yes, I would say that if you're at stock fuel pressure (36psi relative) and running 10:1+ rich at 17psi at high RPMS, I don't think you've got 450's either.

[nocwage]

Since the weather is bad I think I'll pull my plugs tonight and just take a looksy JUST IN CASE i've got one injector constantly spitting out gas and skewing my AFR results

[kapower06]

Dee. I figured the super 60 at 17 psi would be slightly over 300whp but i forgot you can turn the boost up on those pretty high.

Nocwage... keep us updated on your tuning and If you can tune out the top end and you'll get a pretty good boost in power.

[nocwage]

5th Gear Pull.

My car is a JDM import so it has the 4.36 rear diff.

Enjoy! 120-180km/h (74mph to 112mph)

Didn't bother doing a 4th gear pull sorry.. I just retuned it to lower my AFR so I wanted a slower acceleration, but figured you guys would want to see it.It's nothing AMAZING but it's fun

http://videos.streetfire.net/v...9.htm

[float_6969]

Not bad for 5th gear! Congrats.

[nocwage]

Once I get some dyno time and play with some timing it should get faster