The Limit of our ecu's and Fuel Maps Options

[Island_Racer]

Hey guys,
My boost cut is set at 12 PSI, the standard that we all know about, but i have an emanage blue running and wonder if i simply remove boost cut whether or not the ecu can manage the limit of 17psi without any additional tuning (not that im not intending to) just not at the moment.

Any advice on the limit of our ecu?

[3WayStunna]

EDIT: also just to answer your question as to what would happen if you circumvent boost cut. No, the only map the ECU "uses" to account for anything above 1.1 bar is to run extremely rich (85-100% duty cycle) . The end, point and blank. That is why you see alot of ppl using water injection these days with the 3sgte. (aside from its usual benefits). Its to account for higher chances of detonation that WILL happen under normal circumstances when you run your injectors at that high of a duty cycle. Not to mention what it could do to your injectors and fuel pump over time even if you do choose to move to something incredibly higher than 1.1 bar.

So in short, while using race gas, and water injection to make things SAFE, its really not that smart if you can just save some money and get a proper ECU and Fueling Setup, which i will mention later.

Dont forget that while you say .09 bar is the accepted thought, boost is still limited to .05bar in 1st and second gear, .09 bar in all others (REV3).

Basically that is your boost limit with the 3rd gen. Only way to raise it to 1.1 (accepted safe for those without some sort of knock control) is either with a manual or electronic boost controller. Id recommend the electronic though. To go past that without resorting to another Aftermarket ECU, would be to use an active map clamp (make your own, or buy a 100usd HKS unit) and hopefully do whatever possible to reduce chances of knock within your engine (use water injection, LAG your chargecooler are just some of the most common methods used in conjunction with each other).

Other than that, other limits include a speed limit of up too 191km an hour. Best way around that is with a speed cut device.
You also have your REV limit which is 7250rpm.

Other limits, not just with an ECU are with the fuel pump. Its rated at 210lph. And while your injectors are rated at 540cc's at 36psi ( normal operating range for the 3rd gen 3sgte) you can raise the pressure as well with an aftermarket FPR to pump out more fuel, along with an addition of a higher rated fuel pump(walhbro/aeromotive/supra), though usually not recommenmended.

Those are the usual limits dealing with the electronic side of the 3rd gen 3sgte.

My opinion/advice. Save up your money and get an aftermarket ECU. After adding all the things you will need to get your 3sgte running at 1.1-1.5 bar, you would have added alot of stuff and cut into alot of wires. AND no matter how neat and clean you make it all look its rather GHETTO, when compared to just saving up a few hundred bucks and getting a proper ECU, injectors, and fuel pump.

These days there are a TON, i mean literally tons of options and resources at your disposal to do things, cheap, right......... BOTH. My upcoming setups in the future will be using 550cc injectors, an aeromotive fuel pump, and a megasuirt ECU. All of this would cost me around 500-600usd and would be a proper setup that will help me run my engine at around 1.2-1.4psi SAFELY....Hate to say it, but the greddy emanage BLUE is garbage.

This post has been edited by 3WayStunna: Jun 17, 2011 - 5:12 AM