03 Performance..."35ounces where in MA are you located?"

 

you have a PM

 

Isnt there a company that has the Utec that comes with all the base maps you need depending on what FI kit you have? or is that altered?

 

that's altered
they're working on it

 

To get the most out of the TN kit, your first step should be upgrading to larger injectors, an AAM return fuel system, and a quality boost controller, such as the SBC-iD.

The EU can easily control your car safely at these power levels, however, if you have extra funds, then getting a UTEC, and have it professionally tuned would be awesome.

 

Sharif, Do you think you need larger injectors for low 400's RWHP? I think I read that the 380cc injectors in the TN kit were more like 410cc if you ran them at the same fuel pressure that some kits run there injectors? I don't know.

 

So are you saying you'd recommend installing the injectors, fuel system, and boost controller with the reflash? I don't think that would be a good idea without first having either the UTEC or EU, would it?

 

The Denso 380cc injectors would be fine for lower 400s with this kit. However, I think he means to say that he'd be more comfortable running 440's on a lower duty cycle.

 

sorry if this is slightly off topic, but is it possible to run the AAM spec fuel system and the UTEC without a F/I system for a while?
i'm planning on going TN single turbo, but doing it in stages. i'm going to get the UTEC in the next month or so to give me a nice NA tune for my current mods, then later on get the fuel system and then ultimately the TN kit.

 

Yes you can.

 

We have several customers who have done this. It definatly isn't necessary with any standard NA setup but will not hurt anything in the mean time!

 

This is a flash program that modifies the advanced timing map. This upgrade lowers the advanced timing to the regular timing values. This increases reliability on any boosted 350Z/G35 because the car can't "advance" the timing significantly like it previously could without the flash.

We offer this service directly or any of the AAM Spec Product Dealers (ie. Forged Internals, Z1 Motorsports, etc.) can get you the AAM Flash.

Hope this helps,

 

This person already has the EU, so my assumption was that he would install the EU at the same time as the return fuel system and larger injectors. You are correct, in that you would not want to install a fuel system/larger injectors, without some method of tuning it.

 

At 400whp, you will be near 100% duty cycle, depending on your fuel pressure. Keep in mind, that with a proper return fuel system, you "might" be able to get away with the smaller injectors at 400whp. But 440's give you more breathing room, and allow for about 450whp worth of fuel.

 

10.5 PSI and 408 RWHP was where Turbonetics saw the 380s go 100%. This was recent testing too. On the flash of course with fuel pressure at 46 PSI.

 

Yikes 100% duty! Sounds about right, our experience has been that over 385/390rwhp the 380's cannot consistently sustain below 12.5:1 a-f ratios.

 

I wouldn't say that. 10 PSI was just below 100% and was able to keep AFRs in below 12 but not by much on the flash. Turbonetics recommends no more then 9.5 PSI with these injectors. At 9 PSI my car made 390 RWHP with 11.5:1 AFRs across. 10.5 PSI it didnt go lean till after 5k.

 

Below 12 on the dyno? Cause a 4th or 5th gear pull is a long time to keep injectors at 100% Duty on the street. Also the 100% Duty is never the # that should be looked at 90% is pushing it. 80% is conservative safe tuning.

 

The new RC injectors for the 350Z have a redsigned nozzle, so they are safe for 90% published duty cycle, vs. the 80% usual. Just thought i would pass that along. There is always going to be a tradeoff in going with larger injectors, so bigger is not always better. I would chose an injector that meets your needs, plus a little extra.

 

On a Dynapack load based dyno yes. Again Turbonetics recommends no higher then 9.5 PSI on the current flash and injectors. Thats why they are doing Stage II.