Both? I've been getting info and started to collect parts to go built for awhile now.

Did yours pop?

I believe he is on a stock block..

Stock block 12psi 534/500. I've been skirting the danger limit for awhile now. I've been researching built projects because I'm sure it won't last long at this power and I drive the car pretty hard with tons of Street racing. Finally saved up enough money to start my project. Not popped yet but I'm not sure if im used to the power or car is losing power cuz it don't seem fast to me anymore.
Wanna push the stage 2 to the limit. Believe it said was rated for up to 700hp.

I'm very interested because I have the same system as Cosmo and I probably will use his builder as well.

The Z feels not as fast because you got used to it's power. Now you need more power. You addict! :roflpuke2: Damn horsepower junkie. LOL

lol a dude named cosmogirl

It's a sick world out there....:shakes head:

Anyone need turbos? I have two 6262's for sale.

Hey thanks for the offer but you should put them in the For-Sale section...:tup:

Complete speculation on your part. I say this because Mike Botti, MY tuner, tweaked my car with such incredible low and midrange power, that there was absolutely no lean spot or hesitation. No dampeners and no problems. Either that or this lean spot is a myth on the VVEL.

I've driven cars with weak spots in the powerband, yes. My G37 VVEL, with the GTM return kit wasn't even close to having a tuning issue.

I just couldn't let you dismiss a proven build with your own sales hype. I don't doubt the dampeners are a good idea. However, I'd found, and GTM delivered a product which worked famously. One ride in my car and you would have been shrugging in agreement. That is all.

I think cosmogirl has a very adequate system pending. For those who want 600whp+ a better fuel rail system is a must. That would be CJM and GTM. Both proven. :tiphat:

Coop

As stated in my post, some cars experience the side effects, some do not. There has been no pattern found to determine which cars will. You didn't notice any side effects, and that is a happy story. Unfortunately, that has not been the case for many others. This is why I have found it prudent to take action and reconstruct a product that already sells and improve upon it for the better of my customers.

Experience of a single example doesn't tell the same story as the experience from hundreds of samples. Your undampened rails did the job, and that is a pretty frequent experience. That doesn't change the fact that there is a better option. It's not hype.. It's just better.

Lean Spot At ~2400 RPM...What the? - MY350Z.COM Forums

Here is where Phunk says to the Nissan gods "I shall dampen thee".

No speculation, it is a feature that was found a long time ago to fix a problem that may randomly occur and if not addressed cause people to question his kit(AAM rails still have to live with this to this day). Yes, I pulled this thread up before dealing with CJM and found it was all I need to trust this man and his design for MY fuel needs. Instead of just dropping a product and blaming the customer for **** installs(you know who you are), he fixed the problem, make it available and handed it out.

Now, the real question. If these dampeners greatly improve low load driveablity, can eliminate lean spikes and hesitation, and provide another safety net. With ZERO performance, flow or other drawbacks. Why live without?

Let's just add to the fact that you do not need to spend $50k with CJM to get their attention...yeah I went there.

And yes, I run them on my e85 build, and it is OEM daily driver smooth with the walbro 485.

Funny thing about that thread.. At that time it seemed like the problem was extremely rare. Eventually it was like people were coming out of the woodwork reporting that they always had that problem and just didn't know what it is.

STILL a pretty small percentage of people that spoke up... I am going to estimate maybe 5%. But that's just who spoke up to me. Who knows how many cars out there have owners who never found the thread. The last thing that would come to your mind when you experience it is a problem with your rails. I lived with it for a couple years in my 350 and it never even occurred to me. I was positive that my FCON was having an intermittent issue with the crank trigger or something. Too many years I had just disregarded the purpose of the FPDs that every single automotive manufacture puts in their cars.

all i'm saying is it's common knowledge in the rest of the fuel injected community that dampers are not necessary in a good fuel system. only utilizing hard line for return flow so that supply pulsations are dampened in the line, bigger rails (rail pulsations are worse when a huge injector is put in a small rail, the standard rail size for aftermarket rails on the z is so small ~.4, compared to the .5 and up most other aftermarket rails are), and utilizing a quality fpr with, a line for each rail, capable of flowing the supply volume to the engine in return flow, is a sure fire way to get consistent fuel delivery. When you start compromising line sizes and routings, using a regulator too small for your pump and supply line, or using too small of a rail diameter, you start getting these issues. I very rarely see race cars with FPD's because rail resonance is greatly effected by rail size, and size/type of supply line and regulator, and most race setups involve -8 or -10 supply and returns, with 5/8 rails, and large high flow regulators. often a small tweak (5-10psi)to base pressure at the regulator can cure it too because the pressure effects the way the fuel moves in the rail.