Well we can always install a Aftermarket Ecu, Like Motec, Microtech or Haltech. The only problem is that i would have to wire it up for you, and tune it. These ECU are fully control by the User, so if you dont like the redlimiter , you can change it, etc etc...

 

If the Z can only take 5 psi of boost, then it is NOT because of the compression. The RSX type S has a compression ratio of 11.1:1 but takes 6-8 psi just fine. Your telling me that the Z at 10.1:1 cant take 6-8 psi? BS. With a good (rich) air fuel ratio and retarded timing, you can overcome compression ratio, to a certain point at least (I wouldnt recommend going out putting 30 psi and just retarding the timing and putting in a rich mixture, of course). Also, not all psi is the same, anyway. Its all about cfms (volume of air). Using small turbos that spool quick and max at around 7-8 psi would the best bet, unlike greddy using those quite sizable turbos then going around 5-6 psi.

If the Z cant take boost in stock form, it will be cause of weak rods, a ECU that doesnt cooperate (meaning people will need some type of standalone or piggyback system), or fuel injectors that are too small. And NONE of these have been proven to be a problem yet.

We wont know until people start making kits and keeping people updated on what is going on.

 

Y run the car at 8 psi with a rich air/fuel IF you can make the same power at 5 with a perfect Air/fuel. Dont know But i would run less boost and a clean mixture than running two PSI more and using a Rich Mixture. Try it in the Dyno and you will see, that you are making the same power...

 

What do you considar to be "perfect"? Sure there are guys with Superchargers on their S2000's running 13.8:1 air/fuel ratios, and they make the most power. BUT how long will it last? Ultimate Lurker, a very respected member of the S2ki community, told us about a guy whos supercharger he helped tune. He made the best power with the fuel air ratios in the mid 13's:1. However, UR recommended that he run a richer fuel air fixture. The guy declined. Some time later, his engine gave out. Conclusion: just cause you make the most power, doesnt mean its the best fuel air ratio.

For a forced induction car, you need to run rich anyway. Personally, I think running 7 psi on a rich mixture is better than running 5 psi and being on the edge at a leaner mixture, even if they do make the same power.

 

yes and no, it also depends what air/fuel meter you use and what fuel. Every fuel burns different so i can not just tell you use a certain air fuel. But for example if you were to use Race Pro stock 120 octane the perfect mixture ( meaning the most power with out any danger) would be 11.8 but that also depends on the amount of boost level. keeping the same gas as an example. i would use the mixture ( using a motec meter) from. 1psi - 6psi = 12.5, from 7psi to 12psi= 12.0 from 13 psi to 22psi= 11.8 from 23+psi i would use 11.2 but that all depends the race, the car, the engine, and the fuel so PLEASE no one use this mixture unless you are using the same fuel and the same meter.


ITR#203: you are correct for force induction i would run rich also, But at low boost like that, is better to run a little more clean.

 

Marcos,

What do you think about using a single-turbo implementation in the Z. I've talked to a shop that's considering doing such a custom install, and they say it should actually have less lag than the Greddy setup because that one is non-sequential with the 2 Garett turbo's being the same size.

-slay

 

Well, it would work. But i would go twin. Yes, the single turbo would have less lag, But the twin set-up would make more Power. So i guess it comes down to what you want the car for. If you want a fast burst of speed then go with single. But if you are looking for a top speed and ET then go with a twin.

we are making a Pro Modified 350z to run NHRA this year and a Pro RWD to run NHRA next year. And in both cars i'm running a twin turbo set-up using the following.

2- T78 dual Ballbearing
2-Gt wastegate.
1- Air/water intercooler.
1. Ltx-12 microtech ECu.

and we are stroking the engine to 4.5L ( My secret)

So look for the next Summer Slam event in NJ. For the Debut

 

Nice, nice..

Look forward to checking your stuff out.. hope I'll have some time to drop by maybe next week or something.

Oh by the way, the Y-pipes you've designed for Matt, they wouldn't work together with a system like Borla True-Dual Catback or Injen True-Dual Catback, would they ?

 

if they hook up to the factory y pipes,,then yes, it would. But i would have to see one,,to know for shure

 

I'd be happy with a Supercharger making a nice 350 WHP or so.

Secondly, an ECU package with headers, y-pipe, full exhaust, etc. An idea for this would be stages, like stage 1 is just ECU, 2 is ECU and exhaust, 3 is ECU and y pipe, etc. As long as the ECU is tuned to take advantage of certain mods, and can be done in steps while upgrading the ECU for those that don't have the bank roll for everything at once.

Also, engine mounts, a tranny stabilizer bar, etc would all be nice as well.

 

many have already ask for the tranny stabilizer. We are looking into that. There's not to many space down there for anything. But i would post up here something. maybe by next week. on the stabilizer

 

i want aftermarket paddle shifters for my auto

indulf

 

I want a true dual Ti exhaust system..... that would be sweet. None of those single exhaust tips for me, just doesn't look right IMO.

 

Many of us already have Stillen or other exhaust with y-pipe or x-pipe.. high flow cat pipes to bolt up to headers and x-pipe would be high on my list.........

R

 

I'd like to see a titanium plate that protects the carbon fiber driveshaft. I'm concerned about debris bouncing up and damaging the driveshaft, which i'm sure is quite expensive to replace.

I'd also like to see other options for forced induction explored. Perhaps an electric turbine. Something more cost effective than a set-up that costs 1/3 of the cars total price.

 

Well, I would suggest a trilithium warp engine...but that might be a few centuries from now.

So for the present, how about giving us an idea of how much HP/TQ gains from an ECU upgrade. I'd also be interested in headers to help top end gains. I am sure that some of the gains will be octane dependant, we have 93 octane in TX. I all I need is a conservative ball-park estimate of HP/TQ and price.

Many of us are curious about what kind of gains to expect from an ECU upgrade. I know Cheston (Chebosto) is working on this as well. I plan to stay NA and want pretty mild mods say around 300 WHP. It would be great to see good gains all through the RPM band, but most impressive in the 4K to readline range. Give us your expert opinion.

 

I don't think those actually work

 

Has it been done before?

 

someone on ebay sells cheapo 12vdc blowers and claims it helps, but it doesnt.

electric FI is interesting, but there are a lot of hurdles to overcome to make it work.

if you use a standard prop fan, the static pressure (measured in inches of water in HVAC applications) needed to achieve a good amount of boost would require a fairly agressive fan profile. especially if you're only talking 3" in diameter for the blades.

centrifugal fans are better for higher static pressure systems, but they have their own problems- size being the main problem.

then there's the idea of just how much juice itll take to make one of these work. assuming you would use a prop fan, high rpm + high static pressure + an agressive fan profile would take much higher voltage than 12 in a dc setup, and the amp load would be high as well.

and if you use a variable speed setup that adds to the complication/power consumption. not to mention it defeats some of the pulling power of the fan to have obstructions. when you're off the throttle, the fan would push too hard and you'd either need a relief damper or the fan would burn up.

and how do you cool the fan motor? you can put it in the airstream, but then your intake is super hot. intercoolers can help, but now you're talking about similar costs for a turbo system.

if you make it work and make it cheap ill buy one! but until then im a turbo guy.

indulf

 

Any chance any of these parts will trickle down to the G35 coupe market?? :-) I would love to buy your intake manifold! The G35 market is DYING for some parts, its tough pickings.