Adding fuel for more boost ...
Adding fuel for more boost ...
I've read the stickied threads and the FAQ on this. But theres one option I didnt see, an extra injector.
It may sound ghetto, but it's been done on many cars over the years. Just grab a cold start injector from a Saab ect (not a normal injector) and stick it in your intercooler piping just before the throttle body. Then run a Hobbs pressure switch to switch the injector on at 3-4psi, or wherever you go lean.
Can anyone inform me why this method isnt used on turbocharged D17's? My only concerns are the returnless fuel system and the plastic intake. Is there anything else to worry about?
edit: http://www.thedodgegarage.com/turbo_extrainj.html
This link applies to 2.5l TD engines. I've used this method on my Turbo Caravan, thats why I'm asking here
It may sound ghetto, but it's been done on many cars over the years. Just grab a cold start injector from a Saab ect (not a normal injector) and stick it in your intercooler piping just before the throttle body. Then run a Hobbs pressure switch to switch the injector on at 3-4psi, or wherever you go lean.
Can anyone inform me why this method isnt used on turbocharged D17's? My only concerns are the returnless fuel system and the plastic intake. Is there anything else to worry about?
edit: http://www.thedodgegarage.com/turbo_extrainj.html
This link applies to 2.5l TD engines. I've used this method on my Turbo Caravan, thats why I'm asking here
Last edited by mooseofdoom; Apr 21, 2005 at 01:47 AM.
thats more of a quick fix. if you plan on breaking the 10+ psi range then you should really plan on doing the return conversion and getting some 440+ RC injectors and raise your fuel pressure.
Thanks guys, thats what I needed to know.
This is on my friends car btw. Its a 2001 LX. This is a daily driver.
I don't like adding bigger injectors because of problems running rich at idle/low rpms. I know a rrfpr would fix this, but it's out of budget. Im hoping the larger size cold start injector will support 6-7psi (I think it will). Will the stock fuel pump/fpr support 6-7psi?
I plan to add a 2 stage boost switch with 2 MBC's. When off, it will run at 3psi. When switched on, it will run at 6-7psi with the pressure switch activating the injector at 3psi.
This will be a budget ($600) turbo system. I'll post pics and total cost when finished.
This is on my friends car btw. Its a 2001 LX. This is a daily driver.
I don't like adding bigger injectors because of problems running rich at idle/low rpms. I know a rrfpr would fix this, but it's out of budget. Im hoping the larger size cold start injector will support 6-7psi (I think it will). Will the stock fuel pump/fpr support 6-7psi?
I plan to add a 2 stage boost switch with 2 MBC's. When off, it will run at 3psi. When switched on, it will run at 6-7psi with the pressure switch activating the injector at 3psi.
This will be a budget ($600) turbo system. I'll post pics and total cost when finished.
Joined: Jul 2003
Posts: 30,677
Likes: 1
From: Dallas, PA
Rep Power: 606 










Originally Posted by mooseofdoom
This will be a budget ($600) turbo system. I'll post pics and total cost when finished.
it will never happen ........good luck though
Subarus FTW I do NOT miss my civic
iTrader: (9)
Joined: Jul 2004
Posts: 4,595
Likes: 0
From: Scottsdale, AZ
Rep Power: 0 
Originally Posted by mooseofdoom
Thanks guys, thats what I needed to know.
This is on my friends car btw. Its a 2001 LX. This is a daily driver.
I don't like adding bigger injectors because of problems running rich at idle/low rpms. I know a rrfpr would fix this, but it's out of budget. Im hoping the larger size cold start injector will support 6-7psi (I think it will). Will the stock fuel pump/fpr support 6-7psi?
I plan to add a 2 stage boost switch with 2 MBC's. When off, it will run at 3psi. When switched on, it will run at 6-7psi with the pressure switch activating the injector at 3psi.
This will be a budget ($600) turbo system. I'll post pics and total cost when finished.
This is on my friends car btw. Its a 2001 LX. This is a daily driver.
I don't like adding bigger injectors because of problems running rich at idle/low rpms. I know a rrfpr would fix this, but it's out of budget. Im hoping the larger size cold start injector will support 6-7psi (I think it will). Will the stock fuel pump/fpr support 6-7psi?
I plan to add a 2 stage boost switch with 2 MBC's. When off, it will run at 3psi. When switched on, it will run at 6-7psi with the pressure switch activating the injector at 3psi.
This will be a budget ($600) turbo system. I'll post pics and total cost when finished.
600, hahahahahahahahahaha! You wish. Youll be lucky to get away with 2000 from the cheapest crappier parts. I have a 01LX as well thats a daily driver. It wouldnt be daily driver if it was a 600 dollar setup. It woulda blown by now.
I have 2 injectors, that can support up to 14psi of boost. I wouldnt want to use them past 10 or 11psi though. I will upgrade before i do that.
Good luck with everything, you'll need it!
If I do all the work myself. $600 is very reasonable. I think its insane to buy $200 I/C piping and $200 BOV's, or these $3000 kits (little exaggeration). I'll show you guys a price breakdown later. The system will be reliable and effective.
For a fast daily driver, you do not need silicone i/c piping. You dont need RFL BOV (I can get a louder one for $5
). You do not need a huge intercooler. I use a Probe I/C in my van running 14psi, its small and works great at such low boost. I will probably install the same one on the Honda. Im going to run 17psi in my van soon, so I will need a more effecient I/C for better flow and heat reduction. My turbo is running much hotter than a t3/t4 hybrid spooling at 6-7psi 
Most of the money will go torwards the t3/t4 hybrid and the t3 flange header. Everything else will cost a couple bucks here and there. I am not afraid of "blowing up the engine". It will be the same thing as adding a kit, only not as nice looking. I'm experienced enough with turbo cars and know how to be carefull when adding boost/fuel
For a fast daily driver, you do not need silicone i/c piping. You dont need RFL BOV (I can get a louder one for $5
). You do not need a huge intercooler. I use a Probe I/C in my van running 14psi, its small and works great at such low boost. I will probably install the same one on the Honda. Im going to run 17psi in my van soon, so I will need a more effecient I/C for better flow and heat reduction. My turbo is running much hotter than a t3/t4 hybrid spooling at 6-7psi 
Most of the money will go torwards the t3/t4 hybrid and the t3 flange header. Everything else will cost a couple bucks here and there. I am not afraid of "blowing up the engine". It will be the same thing as adding a kit, only not as nice looking. I'm experienced enough with turbo cars and know how to be carefull when adding boost/fuel
Last edited by mooseofdoom; Apr 21, 2005 at 05:47 PM.
Joined: Sep 2001
Posts: 10,658
Likes: 4
From: Woostah
Rep Power: 412 










The motor won't be able to handle the 3psi.
600? Manifold alone will be most of that unless you build one. I assume you can make custom piping for everything else with no materials costs?
I'd love to see the a/f dyno sheet of the car with the extra injector on a pressure switch.
Tell him to have an extra HG around
600? Manifold alone will be most of that unless you build one. I assume you can make custom piping for everything else with no materials costs?
I'd love to see the a/f dyno sheet of the car with the extra injector on a pressure switch.
Tell him to have an extra HG around
Originally Posted by Havok2k1
The motor won't be able to handle the 3psi.
600? Manifold alone will be most of that unless you build one. I assume you can make custom piping for everything else with no materials costs?
I'd love to see the a/f dyno sheet of the car with the extra injector on a pressure switch.
Tell him to have an extra HG around
SRT-4 owner with 2MCHPSI
iTrader: (8)
Joined: Jan 2002
Posts: 1,695
Likes: 0
From: your g/f house, Louisiana, US
Rep Power: 0 
i am not one to pound on the new memebers, but man, you have to be realistic...that have a properly built, safe, reliable turbo setup, you will a minimum of $3000....the extra little crap here and there will cost you more that 600bucks...i almost have that much money in gauges...(aem wideband, boost, and oil pressure) becareful of what you get off of ebay...especially the obx manifold...sure they look cool and stuff, but the reason they are unsuccessful is that that are made of thin stainless and are cheaply welded....i mean, face it...you and i, and the rest of the 7thgen family know that you cant turbo any car for 600 bucks and it be worth anything, but i wish you the best of luck....
Joined: Nov 2003
Posts: 3,318
Likes: 0
From: Boise, Idaho
Rep Power: 327 










Heh, if you bought 4 U-bends at $20 each, no to mention hoses, clamps and such there goes prolly %20 of your budget on just the piping. Good luck on the $600 kit. Hell i paid $800 for just my turbo
. I wish i could have only spent $600 and i aint even done yet!
. I wish i could have only spent $600 and i aint even done yet! Subarus FTW I do NOT miss my civic
iTrader: (9)
Joined: Jul 2004
Posts: 4,595
Likes: 0
From: Scottsdale, AZ
Rep Power: 0 
Originally Posted by mooseofdoom
I read that the engine will run 3psi without any mods. It may be an on/off situation if it cant handle it. Of course I will watch the a/f ratio before adding any boost. I'll also use a wideband o2 for initial tuning.
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
Tommy Cohen
1st - 5th Generation Civic 1973 - 1995
2
Jul 22, 2015 07:54 PM
beeemerdude
Fuel, Oil, Cleaners & Other Maintenance
1
Jul 10, 2015 09:22 PM





