How safe is 10psi ? - Page 2

MrNizzles · 10-04-2009, 12:12 PM

yah, I want the hks evc unit too ...

***TitaniumTT*** · 10-04-2009, 02:09 PM

Why would you add an EVC onto of the boost control that the PFC has? I don't know the software or controls that well, I would certainly upgrade the solenoid but I would never dream of putting a piggyback boost controller onto of the Motec
Comparing a GT60 to BNR's isn't fair. I did it to make a point that you seem hesitant to accept.

dudemaaan · 10-04-2009, 02:53 PM

I run a profec b with pfc but thats with a single turbo and external wastegate. For the sequential system the pfc boost control works pretty well. If you end up with spikes or creep its going to be a seperate problem. I would look into a datalogit to go with the pfc before an aftermarket electronic boost control.

MrNizzles · 10-04-2009, 02:57 PM

Ive heard around that the pfc isn't that great a boost controller... and something more substantial would be better to deal with creep and spike which on colder drives, I do see a little. the pfc is a start tho and for me that includes the datalogit.

MrNizzles · 10-04-2009, 03:47 PM

Quote:

Originally Posted by TitaniumTT

Comparing a GT60 to BNR's isn't fair. I did it to make a point that you seem hesitant to accept.

I accept. I should have got a pair of used stock twins, then this wouldn't be an issue ... however, maybe its an overestimation of bnr's ? just cuz they can boost up to 20psi and still be reliable, I mean, they still leak ... im not too happy I forgot to clean and put some shielding on the secondary air intake. I know fuel is important, but what about intake temps? That's what I feel more worried about... colder air in the fall is almost a catch 22.

***TitaniumTT*** · 10-04-2009, 11:21 PM

Lets focus on fuel first and the main reason you should be scared right now not knowing exactely what your Lambda is.

The FD is a MAP based system. MAP of course meaning Manifiold Absolute Pressure. Now, lets look at our GT60 comparision and put it into BNR territory. If you are running stock twins @ 10 psi everything is happy. But if you put that GT60 on and run it at 10 psi, what's going to happen? Your MAP system is not going to add any additional fuel becuase 10 psi is 10 psi as the MAP sensor reads but 10 psi on one turbo is not 10psi on another. You're moving much more air and not compensating with additional fuel. The car runs lean, pops and yet another rotary is dead and gone.

10 psi on the stock twins is not what 10 psi is on the BNR's. How much? I dunno, but I wouldn't risk it. First thing on my list if I were to buy your car tomorrow would be a PFC with a datalogit, Lambda monitoring, closed loop control, and an appt with a dyno.

Again, I don't know the PFC software/hardware enough to know if there are inputs for L sensors and what not.

I would also be replacing the solenoids with an industrial solenoid and relocating them as well.

10-04-2009, 02:09 PM	#17
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	Why would you add an EVC onto of the boost control that the PFC has? I don't know the software or controls that well, I would certainly upgrade the solenoid but I would never dream of putting a piggyback boost controller onto of the Motec Comparing a GT60 to BNR's isn't fair. I did it to make a point that you seem hesitant to accept. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

10-04-2009, 02:53 PM	#18
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	I run a profec b with pfc but thats with a single turbo and external wastegate. For the sequential system the pfc boost control works pretty well. If you end up with spikes or creep its going to be a seperate problem. I would look into a datalogit to go with the pfc before an aftermarket electronic boost control. __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!

10-04-2009, 02:57 PM	#19
MrNizzles The Newbie Join Date: Mar 2008 Posts: 13 Rep Power: 0	Ive heard around that the pfc isn't that great a boost controller... and something more substantial would be better to deal with creep and spike which on colder drives, I do see a little. the pfc is a start tho and for me that includes the datalogit. Last edited by MrNizzles; 10-04-2009 at 02:59 PM.

10-04-2009, 11:21 PM	#21
*TitaniumTT* Test Whore - Admin Join Date: Mar 2008 Location: Right Behind you son Posts: 4,581 Rep Power: 10	Lets focus on fuel first and the main reason you should be scared right now not knowing exactely what your Lambda is. The FD is a MAP based system. MAP of course meaning Manifiold Absolute Pressure. Now, lets look at our GT60 comparision and put it into BNR territory. If you are running stock twins @ 10 psi everything is happy. But if you put that GT60 on and run it at 10 psi, what's going to happen? Your MAP system is not going to add any additional fuel becuase 10 psi is 10 psi as the MAP sensor reads but 10 psi on one turbo is not 10psi on another. You're moving much more air and not compensating with additional fuel. The car runs lean, pops and yet another rotary is dead and gone. 10 psi on the stock twins is not what 10 psi is on the BNR's. How much? I dunno, but I wouldn't risk it. First thing on my list if I were to buy your car tomorrow would be a PFC with a datalogit, Lambda monitoring, closed loop control, and an appt with a dyno. Again, I don't know the PFC software/hardware enough to know if there are inputs for L sensors and what not. I would also be replacing the solenoids with an industrial solenoid and relocating them as well. __________________ -The Angry Stig- DGRR 2009, 2011, 2012 & 2013 - Best FC DEALS GAP!! WOOHOOOO!!!!! 2015 Audi S4 - Samantha - Zero Brap S4 2004 RX8 - Jocelyn - 196rwhp, 19mpg fuel to noise converter 2000 Jeep Cherokee Sport - Wifey mobile - Now with 2.5" OME lift and 30" BFG AT KO's! So it begins 1998 Jeep Cherokee - 5 spd, 4" lift, 33" BFG's - Rotary Tow Vehicle 1988 'Vert - In progress 1988 FC Coupe - Gretchen -The attention whore BEAST! I'm a sick individual, what's wrong with you? I'm pure Evil I'm still insane, in the best possible way. I think Brian's idea of romance is using lube. Your rage caused the meteor strike in Russia. The Antichrist would be proud of his minion. You win with your thread. Most everything It's a truck with a steel gate on the back. Just a statement of fact Motec M820, AIM dash, ported 13B-RE Cosmo, 6-spd trans, 4.3 Torsen, custom twin wg fully divided mani, Custom 4" split into 2x 3" exhaust, Custom HMIC, Custom custom custom custom I like to welder stuff.... No Bolt-ons allowed. Dyno'ed @ Speed1 Tuned by me - 405rwhp on WG.... WM50 cuming soon. *-Angry Motherfcker Mode ENGAGED-**

10-04-2009, 12:12 PM	#16
MrNizzles The Newbie Join Date: Mar 2008 Posts: 13 Rep Power: 0	yah, I want the hks evc unit too ...