During a road test today at over 90* ambient, it had much more power than previously on a cold night with temps in the 70's. When I hit full boost the back end breaks loose about every time. Definitely time for some new tires when I get done playing! AFR's are about ~11.4 at WOT from about 4.5K rpm and up. I'm going to have the methanol kick in a bit earlier to help get the AFR down a bit more below 4k rpm. It currently comes on at about 4.5 psi but it takes a second or so to pressurize. By dropping the pressure switch to about 3-3.5 psi it should smooth out the ARF in the lower end.

Now I'm going to start giving it a little more timing in the 4-4.8K rpm range where I had to pull it before because of detonation to get a little more power back. I don't think I'll be going any higher than 8 psi unless I make some changes to the fuel system and the MAF. Injectors are reaching about 83% duty cycle at high RPM/Load @ 7.5 psi. 8 psi will probably hit about 85-87% or so duty cycle and you really aren't supposed to exceed 80% to be safe. I think I'll be ok with the methanol injection to richen up the mix a bit.

Here are a few pics of todays AFR graph and some methanol injection install photos. The spike you see in the AFR graph is from me not shifting fast enough and hitting the 7K rev limiter Too many things to try and watch during these tests! I guess thats why they say not to tune on the road. lol I use an empty back country road so don't worry.

Using the washer fluid reservoir for my tank.

I have a stainless steel bolt zip tied to the end of the tube to hold the tube on the bottom of the reservoir.

Tube goes to the pump, then to a check valve, and to the injector

Here is the injector and check valve. Without the check valve it takes 6-7 seconds to re-prime the tube/pump before the injection starts, obviously not acceptable. The tube would drain back into the reservoir between uses without it. With the check valve installed the meth comes instantly, well it takes the pump about a second to get up to speed and pressurize. This is why I will be lowering the ON pressure from 4.5 to about 3-3.5 psi.

Here is the pressure switch that activates the methanol. The methanol is armed from my dual stage boost switch in the car. When it's on the low 3.6 psi setting the methanol is not armed. Flip the switch and boost switches to 7.5 (8 shortly) and arms the methanol.

Here's a video clip of the injector in action.


Modified by qsiguy at 12:09 AM 4/20/2008

btw is your ECU similar to this one:

http://cgi.ebay.com/ebaymotors...i%3D1

Need ACTIVE Suspension Parts or Have Questions:
http://www.activesuspensionsystems.com/index.html
http://www.q45asuspension.com/

So you are happy with the Meth inj right? Is the detenation gone?

Quote, originally posted by qsiguy »

Using the washer fluid reservoir for my tank.

Just curious- Are you just putting enough methanol into the windshield washer reservoir for a short run or do you fill it up and use it all the time? If you're keeping it full isn't evaporation a problem in the Arizona heat?

That's the one that Robert Bowen made for me. I ended up not using it so I've got it for sale.

I would play it safe until you can install a proper fitting into the side or bottom of the windshield washer reservoir. I don't like the hose from the top. Just get a plastic fitting hose barb and use plenty of glue when you install it. You shouldn't have to worry about leaks if done right.

So, now, we are waiting for some vids.

My ECU is one of the original NICO ECUs but I've tuned it myself. I have about 30 variations that I've tried last time I counted. I should have it pretty close by the time I get on the dyno. I have a copy of one of Robert's turbo tunes and it didn't work for me.

It's very tempting to rip it up every time I drive it and specifically every time I'm in the front at a stop light...all I see is the "Christmas tree" and a 1/4 mile strip in front of me!

As far as the volume of that jet it's actually on the smaller end of the options I read about in my research. It puts out approx. 5 GPH at 100 psi. My pump will do about 90 psi so that's about where I'm at.

The spray has to be a super fine mist in order to get pulled into all the cylinders evenly. If it is too wet, then it will collect inside the runners and then you end up with a hit or miss situation.

For my water injection system, I'm running a 150 psi pump. I forget the size of the nozzle but it is pretty small. When it sprays, it is a very fine mist that looks almost gaseous.

I just got back from a run and I retuned the timing map and added about 3* of timing at 4 and 4.4K rpm. Still no detonation. Awesome! Can't decide if I want to add any more timing or not. AFR is pretty much where I want it. I still need to get the methanol trigger pressure set where I want it. I didn't have the laptop with me on that last drive so I couldn't watch the AFR's.

I did try something that was kind of fun. I hadn't tried this before and was curious. With the boost switch on stage 1 (3.6 psi) I floored it and during WOT acceleration and full boost I flipped the stage 2 switch and it instantly shot up to 8 PSI (where it's set currently) and the methanol switched on and it really set us back in the seat. Felt like what they show in movies like Fast and the Furious when they hit the NOS button. It was cool to see how much difference there is from 3.6 psi to 8 psi...Significant.

FYI, I have a couple cool videos on the way too....

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Three short runs total, watch the back end on the last one. Rolling start from about 20 mph, it was a fun one!

Well, here are a couple graphics to show you exactly how they vary from stock currently.

Fuel Map vs. stock

Timing Map vs. stock

I want to see some in-car (RPM/speedo) and compare to the stage I

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BUY ESPELIR LOWERING SPRINGS FOR YOUR 90-01 Q45

Quote, originally posted by elwesso »

haha thats INTENSE how you can see the front end get higher when you hit boost and it starts screaming, i love it!! I want to see some in-car (RPM/speedo) and compare to the stage I

I love it!
Great vid's, i watched the stage 2 5 times, n it gets better each time. SWEET, Can't wait to add boost after I get my Z45 done.
Does it really break loose that much under full load? Love the lift on front when boost starts. Can't wait for the incar 'acceleration testing' vids

BTW, I reset timing back to stock, still no detonation with the methanol. I'm pretty rich tho, high 10's to mid 11's. Gave it a quick romp during lunch and didn't notice any detonation with ambient temps in the low 90's. Still running 8psi. Last night I tweaked it up a bit but I think it detected some knock because it hesitated at about 6 psi and then kicked in. The log showed -3 (I think) on the timing during that "anomaly". I backed it down to 8 again. I'm just about maxed out on the MAF and injectors at 8psi so that may be it until more mods can be done.

Modified by qsiguy at 3:48 PM 4/21/2008

Anyone want to add their guess for the final 8 psi hp number? I'll be super happy to get 400-450 to the wheels.

R32 GTR 4.08 VLSD, NICO 8-way ECU, full exhaust with custom headers,
Tokico Blues with Eibach springs, Stillen FSTB, 20mm RSB, 255 rear rubber.

Video is great, I agree Wes, the front end getting light is awesome!!!

Well done-I love this site and this country.

Looks like Siju still has me by a bit but wait til I get my 4.08 installed, watch out! My car is a rocket from a ~20 mph rolling start but from a standing start it's not too exciting until boost comes in.

Anyway enjoy!...

0-108 mph. Looks like about 14-15 sec. to 108 mph. (This one's on YouTube because I couldn't get it to upload to Photobucket.)

http://www.youtube.com/watch?v=SLBGWe_Q5eo

20-80 mph run

40-80 mph run

And a couple of videos of me playing with the bov.

Modified by qsiguy at 3:17 AM 4/23/2008

Modified by qsiguy at 3:20 AM 4/23/2008

Spoke with Joe at Infinity over there yesterday, he said that your ride is very sweet. Glad the meth is helping, how much boost are you pulling when it kicks in( around 3-4K?)

Here are the direct links, try these.

http://s78.photobucket.com/alb...n.flv

http://s78.photobucket.com/alb...n.flv

http://s78.photobucket.com/alb...1.flv

http://s78.photobucket.com/alb...2.flv

Did you see the first one that's on Youtube?

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BUY ESPELIR LOWERING SPRINGS FOR YOUR 90-01 Q45

I pulled over to assess the damages. While coming to a stop I could hear a strange clanking sound. I counldn't narrow that down but the engine was fortunately running great still. I'm assuming I broke the diff, driveshaft, half shaft, etc. Couldn't tell so I moved on to why boost shot up. I had blown off the wastegate and the bov hoses. The wastegate at that point just shut off and boost was allowed to rise freely

I got home and with the help of my son figured out that I had snapped a wheel stud on the rear passenger side wheel and it was rattling around in the wheel cap. I currently have the chrome wheels from my old Q45a on the rear of my car because I needed some tread.

So, I need some better clamps for my hoses and a new wheel stud. I was pretty worried for a while but I think all is well. Luckily it was just a couple minor issues. I tell you what, those wastegate hoses aren't coming off again, I'll see to that! That could have been extremely bad....

Oh well, that's the risks you take pushing the limits! BTW, it's freakin fast The tune was running pretty good at 9 psi and I was spinning these new tires like it was my old bald ones. Can't wait until I get the 4.08 in here. I'll be fishtailing down the road everywhere I go. LOL

R32 GTR 4.08 VLSD, NICO 8-way ECU, full exhaust with custom headers,
Tokico Blues with Eibach springs, Stillen FSTB, 20mm RSB, 255 rear rubber.

Probably a good idea to replace all the studs on which ever rear end you plan on having in the car long term. Given the increased stress you're going to be placing on the drive line, you should probably replace any and everything .