Soon i will be installing the Turbonetics ST. Ill be putting a Greddy Profec B-Spec.2 II Electronic Boost Controller on it at the time of the install. I was wondering what tuning would need to be done after the install also i was wondering if the ecu will have to be reflashed because of the boost controller. I dont know much about the ecu reflash and if it would work with the hi and low boost level settings. any info is helpful thank you

 

i'd avoid using that controller....it's a POS. I think you might be better off waiting for the stage 1.5 upgrade. There's no way to reflash the ecu for added boost, it's flashed for 8psi and no more. There won't be additional compensation via the ecu for added boost beyond 8psi on the stage 1 reflash setup.

 

So basicaly i cant even run more or less boost if i want to? or will it just mess up my A/F ratio? would running it at 6 psi normal driving and 9 psi when wanting some fun be bad on the setup?

 

you can run less boost, the car may run a tad rich, but it would be fine

 

You shouldn't... you get ecu reflashed from technosquare, so it assumes the boost is around 9psi... If you raise the boost too much with controller, your ecu won't know what to do = you might blow up your engine... Get a UTEC and load several maps for different boost level... Then you can use the boost controller.

One more thing.. you might want to figure out what the ecu and AFR stuff does to your engine before installing a turbo... Ignorance is the sure way to blow up your engine.

 

a tad rich? lol. at 8psi my a/f is between 10.7 and 11:1. That's rich as it is. And in order to run less boost, you need to put a smaller spring in the WG, a boost controller can't lower boost.

 

If you want to run the kit at a lower boost you will have to change the wastegate spring first to a 5 pound spring.

 

and what if i want to run more boost?

 

Then use the boost controller to raise it to what you want.

 

re-read our replies dude.

You've got some learning to do, I wouldn't TOUCH the boost level until you have a slight idea of what you're doing.

 

Greddy Profec B-Spec.2 II not a good choice if you have it already sorry cause i have not read the who thead sell that thing i had nothing but problems with that thing try and buy a duel stage boost controller much more user friendly i belive turboxs makes them. But for the greddy its trully a pain in the A$$ to get that thing to run right.

 

xfactor, I presume you are planning to have a professional retune your car...correct? If so, he will need something to tune it with, such as UTEC. Otherwise, there will be nothing to tune with. Once you raise the boost, you will need a retune. The ECU will NOT compensate with more fuel and less timing, so unfortunately, you cannot just raise the boost without a retune.

 

The ECU does have the ability to pull timing and adjust the fuel mixture on the fly, but only to a certain extent, if I'm not mistaken... It really depends on how much boost you're planning to run.

I've run my car on the reflash anywhere between 7-9.5 psi on the reflash, 380cc injectors, and pump gas, and it has adjusted beautifully to the increased boost levels. On a daily basis I drive around with my ebc set to 9-9.5psi with no issues. I've also run close to 10psi on 100 octane with no detonation.

As long as you dyno after the install to verify your car is running at appropriate AFR's (between 11.0-11.5:1 or so), the reflash and 380cc injectors should run just fine to 9.5psi on pump gas. Anything more than that and you'll want to up the injectors and retune with an EMS. If you want to go that route, I'd suggest waiting for TN to release the stg 1.5 kit.

 

The Reflash is good for a max 9.5 psi.. If you plan on going more than like everyone else said you going to need a good EMS(engine managment Sytem) Lots of guys are running the UTEC..

But your Tuner Should know all this anyway

 

Once the MAF sensor is maxed out, which usually happens around 5000rpm in the 9psi'ish range, then the ECU will not add anymore fuel. It will try to add fuel up to the point the sensor is maxed out. Depending on your setup, you might get lucky and remain in the safe territory if you raise your boost slightly.

But regardless, when boost is changed, the tune needs to be adjusted. The ECU will not retard timing at all, unless knock is present, and that is not the best method of timing control.

 

The stock MAF loses resolution around 5200 at that point Turbonetics did a static cut of timing and a large increase in injector duty on the flash. Everyone always wonders what that little dip is at 5200, thats it. The MAF is going out of resolution and Turbonetics applies an insanley rich tune past that point. That being said the flash is good to about 9.5 PSI depending on other mods and your environment. I would be careful with doing anything like that. Get the Stage 1.5 upgrade when it drops and you can set 5 maps and tune to your hearts desire.

 

Thank you for the replys that is exactly the information i was looking for. I am asking these questions now before i get myself in trouble and mess my car up. and i dont have that EBC yet. i was just lookin into them and my friend had one and it seemed to work just fine. but thanks again (to the people that didnt be rude) for the very helpful information

 

That's the best explanation I've heard yet. Thanks MIA.