Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Profec-B II Boost // problems

slider2828 · 04-05-2006, 11:38 AM

Awesome, I am happy you are getting it... Yah you can offset the boost spike by raising the SET value. So it holds at the correct PSI without spiking. Yah those T25 or T28 mofo's with correct turbo boost settings actually can really freaking pull. I have a T25 stock from my JDM clip and I keep up with an STI on a 2nd gear pull.... Damn 4 wheelers pull like mofo in first.... *shakes fist at 4 wheelers*.... grrrr.....

As per how much you boost, you should have a boost gauge in your car, cause greddy profec B II dun really have a real time boost gauge in it. (Kinda sucks that is why I have a profec E-01). But anyways, with what you have you only have Peak and Last boost. Peak is the most boost you have had in your car EVER and there is memory on this one (you can only manually reset it). Last boost is the last boost recording and resets every time you boost. (Could be useful). But hahaha you know what if you ever watched the drift bible or like any S13 car, hahah they have a standard analog boost guage.

O and those stupid manuals are written by tech writers, not by people who tune.... So sometimes you just have to make sense of it. But based on your experiment you can see that the gain really gets the boost up there and maybe spike it, while the start boost just gives it good consistency. I think the profec-e01 manual explains it a little better, but not much.

O BTW bro... hopefully you are doing your other homework, like having a front mount or at least an aluminum hotpipe, any type of FPR and bigger injectors and some ecu tuning bro..... Cause you at 14 PSI, you are definitely maxing out injectors and you are definitely saturating the crappy side mount intercooler, so you are boosting hot air into the engine. Note 14 - 15 psi is pretty max on a T28.

Happy Boosting.... I only write this because a lot of people bang on the Profec's saying they suck compared to the cooler Blitz controllers. But I am just trying to get rid of that idea.... If you understand it, you will just make your turbo scream for more.

04-05-2006, 11:38 AM	#8
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13)	Awesome, I am happy you are getting it... Yah you can offset the boost spike by raising the SET value. So it holds at the correct PSI without spiking. Yah those T25 or T28 mofo's with correct turbo boost settings actually can really freaking pull. I have a T25 stock from my JDM clip and I keep up with an STI on a 2nd gear pull.... Damn 4 wheelers pull like mofo in first.... shakes fist at 4 wheelers.... grrrr..... As per how much you boost, you should have a boost gauge in your car, cause greddy profec B II dun really have a real time boost gauge in it. (Kinda sucks that is why I have a profec E-01). But anyways, with what you have you only have Peak and Last boost. Peak is the most boost you have had in your car EVER and there is memory on this one (you can only manually reset it). Last boost is the last boost recording and resets every time you boost. (Could be useful). But hahaha you know what if you ever watched the drift bible or like any S13 car, hahah they have a standard analog boost guage. O and those stupid manuals are written by tech writers, not by people who tune.... So sometimes you just have to make sense of it. But based on your experiment you can see that the gain really gets the boost up there and maybe spike it, while the start boost just gives it good consistency. I think the profec-e01 manual explains it a little better, but not much. O BTW bro... hopefully you are doing your other homework, like having a front mount or at least an aluminum hotpipe, any type of FPR and bigger injectors and some ecu tuning bro..... Cause you at 14 PSI, you are definitely maxing out injectors and you are definitely saturating the crappy side mount intercooler, so you are boosting hot air into the engine. Note 14 - 15 psi is pretty max on a T28. Happy Boosting.... I only write this because a lot of people bang on the Profec's saying they suck compared to the cooler Blitz controllers. But I am just trying to get rid of that idea.... If you understand it, you will just make your turbo scream for more. Last edited by slider2828; 04-05-2006 at 12:00 PM..