Hey everybody I finally got my winter project finished and tuned. I have a AEM EMS 1052, Clutch Masters Stage 3, with a Zex direct port WET kit spraying a 150 shot of Nitrous while using a full STANDALONE fuel system. Which includes, Jaz 1 gallon fuel cell, Walbro inline fuel pump, Aeromotive return style fuel pressure regulator and using Q16 race gas.

Check my sig for a full list of mods.

The nitrous kit pulls fuel from this standalone fuel setup rather then pulling it from the stock fuel lines using a T fitting, which was my problem on 125 shot tune because of the fuel pressure drop when the nitrous came on. And was causing my N/A tune to be affected by this not to mention not a sufficient setup for that high of a shot. Here's a picture of the fuel setup.




PREVIOUS-----Dyno numbers from 125 shot were 370whp 270tq and 235whp 163tq N/A

CURRENT/TODAY-----150 shot of Nitrous and Q16 race gas yielded 390WHP 324TQ and 215whp 152tq N/A


THE DYNO WAS RECALIBRATED since my 125 shot tune last august and now reads lower than before, I use to have 235whp N/A now I have 215whp N/A so you can see how this would affect my new numbers, but I would RATHER have it be accurate than inflated.

Vtec comes on at 4800rpms the Nitrous comes on at 5600rpms and shuts off at 8000rpms. Fuel cutoff is 8300.






We did a few pulls with the 150 shot then tried to do 2 more and the engine kept cutting out?!? So John checked the spark plugs ( 2 steps colder ngk coppers 7405 ) we found THIS!!!



Melted!!! Either detonation or extreme heat from the timing. I brought extra plugs with replaced the plug and continued on with out any more problems.

We also wound up changing the 150 shot jet in the distribution block for the fuel to a 175 shot jet...this actually helped improve the afr's when the nitrous came on and let me use LESS fuel pressure ( 50psi ) to 40psi which is what the ZEX kit recommends at the fuel nozzles.

For all you critics I took a compression test a day before my tune and it yielded 240psi on all four cylinders. It has not changed throughout the ENTIRE time I sprayed 100 and 125 shots on this motor all together at LEAST 15-20 times, plus tuning. And now TODAY after the tune I yielded yet again...240psi on all four cylinders!!! Its all in the tune.

Here is a dyno pull, nothing fancy.

http://www.youtube.com/watch?v=TQGW2l2QW9k

Here's my car...



My goal was 400whp all Nitrous but with me having STOCK header, STOCK PIPING, a test pipe and muffler swap...my exhaust has become my limit at this point. I will be looking into getting a 3 inch dual exhaust in the future. But far as I'm concerned its 400whp

Again thanks to John my tuner down at Innovative Motor Works for doing another great job tuning my car and taking the extra time to inform me what he's doing and answering my questions! I HIGHLY recommend him to anyone, he is located in Carlisle, PA.

 

Congrats! That's an interesting setup, and some nice numbers on the dyno. Nice idea on the standalone fuel system.

I don't know a thing about nitrous, so forgive the stupid question... But I noticed that the torque curve falls off after the initial bump from the nitrous. Do you think maybe more pressure / larger nozzles would flow enough to maintain a flat torque curve? Holding 324wtq to 8,000 rpm would have given you 493whp.

 

Nice, race some turbod Ss on video, feel a lot different?

 

love it!!! excellent work

 

lol I don't know about 493! but no thats the way nitrous is I theres nothing you can do to make that torque curve stay up changing jets or not. Turbo ( some exceptions ) or Superchargers torque gradually climb to a point, however with nitrous your at your peak almost INSTANTLY and taper off then giving you better acceleration over turbo's or sc's. I do however probably would have to say at my current 390whp there is no turbo or sc with the same amount of tq I have, probably not even within 30 tq of me.

 

I haven't sprayed it on the street yet but I will let you know, my tradition every time I get a tune is to bring the car home and not drive it til the next day. Yeah I know your saying I'm crazy but I feel like it went through enough of a beating on the dyno let it rest a day

 

great job!! who did the tune?

 

that curve is insane, slow to ludicrous speed in 300 RPM's .. must feel like you got rear ended by a freight train when the juice hits

 

edited...Innovative MotorWorks, Carlisle, PA...John the tuner

 

Great job

All i can say is that you were very lucky to escape without any issue after this spark plug. Usually you get a scored cyclinder wall from this. But you must be very lucky