I had a couple of problems, but it is hard to say exactly what was causing it. I had a coil pack issue under load at 16psi of boost. I put a brand new set of Nissan coilpacks in the car.

Thanks for that info... did the new coil packs solve your issue? I have thought I may have a coil issue as well but don't know if there is a way to test them without a trip to the dealership.

Yes, that fixed it. If they are old, just replace them and the spark plugs.

I had fun at Z Nationals. First time I have had fun with the car in a while. I did the dyno thing. Car made 900whp/713tq on 23psi of boost. It did really well. I left early, I was warn out and had to work today. Somebody said I won it. I have no idea. I would have stayed a little longer if I would have known. Nothing worse than trying to give out something and the person was not there. I feel bad for that if that was the case.

I have learned a ton over the last 3 years. Sometimes you just have to fail to get you to that point where you figure things out. So, failing is not a bad thing. It is just part of the process of learning.

The look on my face after every dyno pull before I flip the switch to the next level. Just like Bobby Bushay right before he passes the football. Yeap, that was the smile on my face. LOL

Meanwhile, there's someone somewhere reading through all the details in this thread like this guy is explaining it to them.
https://cache.moviestillsdb.com/i/50...aterboy-lg.jpg

I posted some data on Instagram. You can go there to see it if you know who I am.

Some people would rather shut me up or ignore me. Call me names, etc. I am just doing my thang. I hope people are learning a few things. I have been learning during the journey.

Enjoy, one of the reasons I went to a 1.06AR exhaust housing on my turbos. Drive pressure and backpressure are not the same. This is one of the things the
GTR guys figured out long ago. With twins, there exhaust and downpipes are 3.5in. and their turbo intakes pipes are large. 3.5 to 4.5in.

Welp, the weather has turned cold. Getting traction with R888r's is out. Not gonna happen below 80deg at my power level. Gonna need to switch over to my drag radial setup. I was trying to get some tuning in with the R888r's and that is out. It wouldn't be that big of a deal, but I will more than likely have to go back to my stockish rear brake setup.

One of my favorite NASCAR stories. Sometimes, it is the obvious stuff that you can't miss.

Great Podcast.

Enjoy. Important information in here for some.

Leaving my old brake ducts open for fresh air to the air filters needs to be changed. At speeds, the hood goes to dancing because the front end is catching air. I guess I will need to build some boxes to only supply fresh air to the air filters or cap it off. That's the only change that was made to the aero.

Things are going slow right now. Learning new things and taking my time. I am in no hurry.

I installed a Z1 lower temp thermostat today. Playing around with a few things to see how coolant pressure reacts. Waiting for everything to dry out. The Z1 one is 170 deg. opening. The Mishimoto one opens up at 150 deg. Factory opens at 180 deg but I always see 190 to 200 deg on my gauge. First test of the Z1 thermostat the car is at 180 deg. We shall see what happens.

What we should see for coolant pressure is not something that is set in stone. It depends on where the pressure sensor is installed. Every car may be different. So, you get your baseline at lower boost, say 12psi. My cars baseline is as follows. The coolant pressure will increase with rpm, due to the water pump making more pressure. RPM goes up, coolant pressure will rise. Mine rises to 25psi at the top of a run. Andre and Kyle saw the same thing. We are all on standalones. Kyle reduced his pressure by removing his thermostat. Lower temps = lower pressure. His stay at 12psi. Andre saw what I did, 25psi or so. Now, I see Admin has some coolant pressure sensors running through Ecutek. I did see Trash's cars coolant pressure. It maxed at 17psi or so. Not sure why or if it was due to it being done with Ecutek. The GTR guys see anywhere from 38psi to 80psi at the top of a run depending on where the sensor is located. What I am trying to say is get your baseline and go from there. There is no magic number set in stone. You watch your baseline and look for a big change in your norms. More boost equals more heat which equal more pressure. Your readings will vary.

Anytime I get a chance to listen to Shane T. I am in.

I am going back to Pocono to do some roll racing next year. Get your cars ready to go.

Z1 170 deg thermostat testing is done. I am seeing a reduction in temp and coolant pressure. Coolant temps use to run 195 deg. They now are running 185 deg. My max coolant pressure before was 25psi at the top of a run. They are now at 22psi. They decreased 3psi. The data looks good. The coolant pressure has also become more stable when the thermostat is closed. It is worth it to go to this thermostat on a boosted application.

The Emtron is paying for itself. That's for sure.

I have seen people do this before.

Been out testing the factory 88kpa radiator cap on my car. The coolant pressure dropped like a rock. It is now around 8psi regular driving. Under boost the highest it got was 15psi at the top of the rpm range. 7800rpms. That's it.

So much to learn, not enough time to do it. Torque Management tuning. I haven't even scratched the surface of my ECU's capabilities.

Coolant pressure testing has been completed. The best setup is to change your car to a Z1 170 deg thermostat and use a Nissan 88kpa radiator cap which comes on the 2012 and up 370z's. You also need to stick with the factory pressurized or non-pressurized coolant tank. They have enough volume to hold the extra coolant to keep your levels correct. If your engine is healthy your coolant pressure should be around 15 to 17psi under max load. The pressure climbs up to around that level in the upper rpm range. When the thermostat is closed your pressure may rise up during warm up. It is perfectly normal. I hope this helps some folks get an understanding of what is going on. You want to record a baseline of what your car does. There are many variables. Where the coolant pressure sensor is, Thermostat, and what radiator cap is being used. You are looking for a change from the normal.

Can't remember if I posted this or not.

Some more.

I am figuring things out. Without the help of the Emtron and sensors, this would be very difficult to do.

It appears a few folks are starting to figure out how to build proper VQ turbo kits now days. Mr. Squeeze and I figured it out about 3 years ago. I have just had my popcorn out watching the show. Starting to see a few cars make 9xxwhp at 23psi of boost like my car does. My car could make more at 23psi of boost but I have kept my timing conservative. Only 15 to 16 degrees of timing. I want to keep the cylinder pressure in check. At 9.5:1 or 10:1 that's what they should make if the turbo kit is right with the correct size turbos.

Maybe you should phone up some shops to school them on how to produce big power on the VQ since you seem to come across as the Godfather of this topic. Might do the community some good since having more knowledge is never a bad thing.

This is why I don't post much anymore.

Popped up in my youtube feed.



https://youtu.be/DmQjV9Pe3E4?si=dWLbe2VoZUpxmyCw

Yup, I saw it. I am drooling. LOL

I wonder. Hmm.

I installed my Anti-Gravity lithium-ion battery in my car back in 2020. I have never put it on a battery tender. It is still doing great. I also just picked up 2–55-gallon drums of Ethanol One R. First thing I noticed is my Ethanol percentage increased compared to Ignite Red. It went up to 88% after dumping in 10 gallons into the tank. I will use either fuel. Whatever I can get cheaper. They are both great fuel to run out of the barrel.

Had a big time today. Went for a drive since it has warmed up a bit.

Still enjoying the car. I have some thermostat removal testing to do to see what happens. I have installed a restrictor.

New headlights time. Mine are looking like crap. What is everybody using?