Secondary Fuel Injectors
Joined: Mar 2001
Posts: 30,804
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From: FL-->NJ/NYC again!
Originally posted by Dj*BaM|BaM
(1) I want to get the PowerFC, I really do, but I still need to worry about other things at the moment.
(2) But all I can say is that my boost will not be going any higher than 10 psi, and that's a fact since that is the spring value that my HKS wastegate is using. I was boosting 10 psi across the board on 3rd WOT so I know that is true.
(3) I know that putting the stock cat back on would help, but I was just planning on welding the tubing to the dp to reduce the noise.
(4) Actually, wouldn't adding the cat restrict airflow and actaully worsen the situation rather than help it?
(5) O btw, with the powerfc, will i be able to limit the boost to 10 psi still or is that still the wastegate's job to release all those extra exhaust gases according to whatever the spring rating is?
(1) I want to get the PowerFC, I really do, but I still need to worry about other things at the moment.
(2) But all I can say is that my boost will not be going any higher than 10 psi, and that's a fact since that is the spring value that my HKS wastegate is using. I was boosting 10 psi across the board on 3rd WOT so I know that is true.
(3) I know that putting the stock cat back on would help, but I was just planning on welding the tubing to the dp to reduce the noise.
(4) Actually, wouldn't adding the cat restrict airflow and actaully worsen the situation rather than help it?
(5) O btw, with the powerfc, will i be able to limit the boost to 10 psi still or is that still the wastegate's job to release all those extra exhaust gases according to whatever the spring rating is?
(1) What other things? Like what to drive after your motor blows? Or personal issues? If you are able to, keep the car parked.
(2) That's a plus, but remember, you still haven't seen redline. Single turbos have stable boost, so in general I agree.
(3) The main reason for putting the stock cat back on is for backpressure. According to Dave at kdr, on stock twins you need some backpressure to "keep residual fuel in the motor" and lessen the chance of leaning out. Basically, it's a safety net. I would think it's the same thing on a single turbo fd. The noise is the least of your concerns right now.
(4) Nope. See above

(5) The power fc can control boost--the wastegate determines your absolute minimum boost (the spring rating) and also your mazimum boost, or lack thereof (wastegate orifice too small combined with no backpressure, as in a stock wastegate and downpipe/midpipe combo). The Power FC will allow you to set it within those two values.
Honestly man, you would have been much better off buying a stock FD--I hope it all works out for you....
Last edited by GoodfellaFD3S; Jun 27, 2002 at 09:17 AM.
1JZ powered
Joined: Jul 2001
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From: Where there's only two seasons, hot and wet! I love Okinawa
So you're boosting 10 PSI on a T-04S in 3rd gear with a STOCK fuel system, STOCK intercooler, STOCK ecu?
all those add up to BLOWN ENGINE...DO NOT BOOST UP.
Hell, listen to GoodFellas and don't drive the damn car. YOU CAN BLOW the ENGINE in it's state right now VERY EASILY.
all those add up to BLOWN ENGINE...DO NOT BOOST UP.
Hell, listen to GoodFellas and don't drive the damn car. YOU CAN BLOW the ENGINE in it's state right now VERY EASILY.
Joined: Mar 2001
Posts: 30,804
Likes: 646
From: FL-->NJ/NYC again!
Originally posted by Wade
This forum is just loaded with bad advice and BS...
This forum is just loaded with bad advice and BS...
Originally posted by Dj*BaM|BaM
Well I dont want to replace the motor just yet, this one still has an entire life cycle ahead of it. I want to get the PowerFC, I really do, but I still need to worry about other things at the moment. But all I can say is that my boost will not be going any higher than 10 psi, and that's a fact since that is the spring value that my HKS wastegate is using. I was boosting 10 psi across the board on 3rd WOT so I know that is true. I know that putting the stock cat back on would help, but I was just planning on welding the tubing to the dp to reduce the noise. Actually, wouldn't adding the cat restrict airflow and actaully worsen the situation rather than help it?
O btw, with the powerfc, will i be able to limit the boost to 10 psi still or is that still the wastegate's job to release all those extra exhaust gases according to whatever the spring rating is?
Well I dont want to replace the motor just yet, this one still has an entire life cycle ahead of it. I want to get the PowerFC, I really do, but I still need to worry about other things at the moment. But all I can say is that my boost will not be going any higher than 10 psi, and that's a fact since that is the spring value that my HKS wastegate is using. I was boosting 10 psi across the board on 3rd WOT so I know that is true. I know that putting the stock cat back on would help, but I was just planning on welding the tubing to the dp to reduce the noise. Actually, wouldn't adding the cat restrict airflow and actaully worsen the situation rather than help it?
O btw, with the powerfc, will i be able to limit the boost to 10 psi still or is that still the wastegate's job to release all those extra exhaust gases according to whatever the spring rating is?
Matt
This is about wades post: If you go to his web site he's done about Wide band testing. He has shown even with mods the stock ecu runs really rich. Here is the link, http://www.wvinter.net/~flanham/wlan.../3modrule.html
With every bolt on and a stock ecu it was running low 11.x :1
It's just he tested a old theory in a measurable, repeatable way (3 mod rule) and found it to be untrue.
With every bolt on and a stock ecu it was running low 11.x :1
It's just he tested a old theory in a measurable, repeatable way (3 mod rule) and found it to be untrue.
Look guys, sorry to be so negative and vague about exactly what I disagree with in this thread. My job has been high stress and long hours lately and I'm just being bitchy, really. I will elaborate more on this topic soon.
Wade
Wade
Yea I know Wade is right guys. I got to talk to Alex, head of SP engineering (he did all the work on this car personally), and he said that this setup runs fine the way it is as far as streetability is concerned, and all it needs is a fuel pump and at the very least, a chipped ecu to get this puppy running the way the previous owner intended it to be. I know you guys are all have good intentions, but I would honestly preferred if somebody who has a single turbo setup (t04s preferrably) explained it to me.
I ran it today, and it seemed to run fine except for one problem, which is that it is running way too rich. I can't say exactly what my mpg are currently, but its not anywhere near what it should be. I think I might be overreacting, but I just wanna make sure I got everything covered. What do you single turbo guys recommend doing to run less rich?
I ran it today, and it seemed to run fine except for one problem, which is that it is running way too rich. I can't say exactly what my mpg are currently, but its not anywhere near what it should be. I think I might be overreacting, but I just wanna make sure I got everything covered. What do you single turbo guys recommend doing to run less rich?
Last edited by Silex; Jun 27, 2002 at 10:58 PM.
Originally posted by 7 eleven
This is about wades post: If you go to his web site he's done about Wide band testing. He has shown even with mods the stock ecu runs really rich. Here is the link, http://www.wvinter.net/~flanham/wlan.../3modrule.html
With every bolt on and a stock ecu it was running low 11.x :1
It's just he tested a old theory in a measurable, repeatable way (3 mod rule) and found it to be untrue.
This is about wades post: If you go to his web site he's done about Wide band testing. He has shown even with mods the stock ecu runs really rich. Here is the link, http://www.wvinter.net/~flanham/wlan.../3modrule.html
With every bolt on and a stock ecu it was running low 11.x :1
It's just he tested a old theory in a measurable, repeatable way (3 mod rule) and found it to be untrue.
Joined: Mar 2001
Posts: 30,804
Likes: 646
From: FL-->NJ/NYC again!
Originally posted by Dj*BaM|BaM
Jessus man, your post is exactly what my problem is! I'm running wayyyyyyyyy too rich! I'm checking out that site now, and please is someone can comment on how to fix that, please do. Thanks again.
Jessus man, your post is exactly what my problem is! I'm running wayyyyyyyyy too rich! I'm checking out that site now, and please is someone can comment on how to fix that, please do. Thanks again.
Remember, this isn't a piston motor--it's a forced induction rotary. Dave at KDR tunes FDs modded like mine for low 11s a/f, and Chris at RP tunes them for high 11s. Any piston guy would fall over at hearing that. It's rich as hell; but it's *safe.*
If you're running very rich, that's the reason your car still runs at all.
Yea I sorta overreacted. I am running rich, whichI know is most definitely better than running lean, and I calucaled I get roughly 15 mpg on the highway. Well okay good stuff. Thank you all for the posts and I will take it easy on the throttle
.
.
Dude, you are in a different world. There are a lot of posts trying to give you advice but I really think you are in over your head and we are wasting our time!
Do you really think that your fuel mileage is a good indicator of running rich or lean?
I can think of a dozen factors that impact fuel mileage and have nothing to do with "running rich" including: tire pressure, stop & go driving, driving fast & hard, worn spark plugs, and the list goes on.
Do you really think that your fuel mileage is a good indicator of running rich or lean?
I can think of a dozen factors that impact fuel mileage and have nothing to do with "running rich" including: tire pressure, stop & go driving, driving fast & hard, worn spark plugs, and the list goes on.
Jones, man, I appreciate everyone's help and insight in this, but unless SP Engineering is a cover-up shop for smuggling in some coke from Cuba, I think that they know what they are doing on the car. According to the receipts that I have received, the engine received a mighty overhaul 9K miles ago and everything that was used was pulled and replaced to ensure the car ran as new as possible. I know for a fact that I'm running a tad rich. A majority of singles do run around 10-15 mpg and that's normal (esp. on stock ecu).
I've had the car checked out and all that could be found were just a few leaks that has nothing to do with fuel what-so-ever. In any case, I don't want you guys to think that you are posting here in vain. This isn't just for me, this is for the current and future RX-7 owner who does a search and has a similar setup. Hell, that person might actaully learn something from reading this. I know I have
.
I've had the car checked out and all that could be found were just a few leaks that has nothing to do with fuel what-so-ever. In any case, I don't want you guys to think that you are posting here in vain. This isn't just for me, this is for the current and future RX-7 owner who does a search and has a similar setup. Hell, that person might actaully learn something from reading this. I know I have
.
Last edited by Silex; Jun 28, 2002 at 09:56 PM.
I agree that if you are going to upgrade the injectors, you need to upgrade the pump too. I would recommend upgrading the ECU too, and then you have complete control of your fuel curve. Good luck with the install as I have just completed it this winter myself.
Joined: Mar 2001
Posts: 30,804
Likes: 646
From: FL-->NJ/NYC again!
Originally posted by Dj*BaM|BaM
Thanks Zero for the reassurance man. What kinda setup are you running? Everyone likes to scare me by saying I will det
. but I just suck it up and take it like a man.
Thanks Zero for the reassurance man. What kinda setup are you running? Everyone likes to scare me by saying I will det
. but I just suck it up and take it like a man.
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