Joe's FP Reducer kit works!!!!

RuggedMazda

Member
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03 MazdaSpeed, 93 Supra TT RC toy.
So yesterday I received the kit & as soon as I got it, I installed it
The install was very easy & the instructions were very strait forward everything fit perfect.
So after I installed the kit I went for a ride & let me just say that this Kit really works All I have is the K&N filter
The only variable was that yesterday was a cool day here in NY, so that may have helped out anyway, but the car just felt a lot better throughout the band It was very consistent & I felt no stumble at all, not even under 4500RPMs, just your usual lag in second gear ( thats were I feel it most )..
I'm not just saying this ether, it's what I felt as soon as I
finished my install, others may not agree......
So if your thinking about getting the kit, you should
Now, this was just after one day ( a cool one ) & I really
want to see what happens when we get more hot days.
Has for A/F readings, I don't have a gauge, but like I said
it felt better yesterday....
Also the kit keeps a very clean & OEM look & unless you have a very observant service tech, they most likely will not even know something was change, just my opinion though I drilled the hole higher up on the intake pipe, but you can easily hid that part of the install
One more thing to add, it looks like it helped the engines idle when I let it cool down, even as the fan kicked in
 
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I'm thinking about buying that fuel reducer also. Is it possible for you to scan the install instructions and post it here? He doesn't have too much info on his site about this kit or how the install goes. But, it's a product I'm definetly looking forward to buy.
 
Pic's...
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Some oil spilled, not related to the FP Kit....
 
Lol that is the line I got my boost gauge running off of. Hope there is no issue with having both run off that vac line :D
 
Lol that is the line I got my boost gauge running off of. Hope there is no issue with having both run off that vac line

Yup, I asked Joe about that & there is another line right under
were you can tap into. You can't use that line for both though..
 
I dont understand, i thought you had to run it off the line coming from the fp regulater, is this not the case? could you maybee get a pic from the back? bye the way, thanks alot for the pics youve posted so far
 
MemphisRacer said:
I dont understand, i thought you had to run it off the line coming from the fp regulater, is this not the case? could you maybee get a pic from the back? bye the way, thanks alot for the pics youve posted so far

Hey guys- to answer the question about the boost gauge- this goes where you currently have the gauge. There is another line on top of the throttle body that you can tap for the gauge. If you look where the IC pipe goes to the throttle body, you will see a hose coming off the top of it there, just splice that for your boost gauge.

As for MemphisRacers question- it does go to the line for the FPR. It makes for a slightly easier install to do it before the solenoid and I actually prefer it there, but between the intake and solenoid or the solenoid and FPR shouldn't matter much. It is the same signal either way :).
Joe
 
UFO70 said:
I'm thinking about buying that fuel reducer also. Is it possible for you to scan the install instructions and post it here? He doesn't have too much info on his site about this kit or how the install goes. But, it's a product I'm definetly looking forward to buy.
It is a simple install- locate the line that feeds your FPR coming from the back of the intake- cut it and install the tee that comes with the kit. There is then a check valve that you attach to the open port on the tee and run another hose off the checkvalve to the intake pipe. I am hesistant to post too much info as people already started talking about just copying it for themselves. Word of advice if that is your plan- I picked this check valve based on seat pressure, opening PSI and flow- too much one way and it won't work, too much the other way and your motor go boom :D ..... This kit has been tested for all conditions, boost levels, etc. and is basically calibrated to my spec for this cars needs.

Let me know if you have any further questions and I will be happy to answer them.
Joe
 
Has anyone got to test this in a warmer climate yet?? I live in Cali, and we're getting to the 100+ days around here...
 
turboge was my Cali tester. He had the same results while under boost as the rest of us!!! That was my biggest concern and he was happy with the results :).
Joe
 
ok this has to be the best bang for the buck mod for driveablilty for our cars. if you don't have this kit yet....YOU NEED TO GET IT!!!

tested the kit and it works wonders. did back to back pulls with it connected and with it off.

connected the car pulled smoothly...and i mean smoothly all thru out the RPM range. like noted u can tell when it's turbo lag now. a/f readings drop dramatically

i pulled the kit off and tested it with out it....ran like stock....hesitated and flattened out in the normal spots.

i'd like to thank joe p for sticking around helping us msp owners. he's done a lot for us as far as r&d and his efforts are greatly shown with the work that he does. thanks joe (2thumbs)

-Alan
 
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sounds good, but I'm just curious as to how this exactly works again?? This "bleeds" off a little extra fuel from the FPR to lean out the fuel curve and eliminate the stumbling associated with excess fuel?? If that's the case, what happens when I raise my boost up to the 10-12psi range? That extra fuel is there to keep it from detonating (something mazda is scared of ever since the gen3 rx-7). How does this go about checking the correct level of fuel?
 
huh, I knew the ratio neeed to be ideal, but I thought our cars were running normal, then as the boost came on (more air) the injectors just went wide open regardless of how much air the motor was breathing. that's what my car feels like anyway.
 
Turbo Matty P said:
huh, I knew the ratio neeed to be ideal, but I thought our cars were running normal, then as the boost came on (more air) the injectors just went wide open regardless of how much air the motor was breathing. that's what my car feels like anyway.

The FPR is a rising rate, so with boost, it will raise fuel pressure. Since the ECU mapping is WAY too rich, this will cut some of the fuel pressure back while under boost. The enrichment will still be linear to boost, just less of an enrichment. The car is still very safely rich, I could have pulled more and gotten a bit more power, but I wanted to keep it safe for everyone also :).. I have run it from 5 psi to 13 psi of boost with no difference in AF ratio.

I still haven't proven/disproven if the injectors go wide open or if it is just overly rich mapping, either way the mechanical enrichment (ie: FPR) can be manipulated without the ECU ever knowing it :).
Joe
 
Tappin my foot waitin for mine. I hope I get it today, so I can put it on with my Boost Controller. I GOT DRAGS THIS WEEKEND JOE. :mad: j/k thanks again for stickin with us, and helpin with the "budget mods" Ill hit you up about the SRI and heat protection. :D
 
wow, if a couple more people give this mod the thumbs up I'm in! If the stumble can be defeated the MSP will be nearly perfect. How much stock is there on these kits? Will he ship to Canada? I'm watching this thread like a hawk! :)
 
Sounds incredibly promising to me as well. My only concern is the install. I know nothing about turbos and close to that about motors, aside from general functions, despite the fact that I'm mechanically inclined. So, are the directions explicit enough for me to locate all the correct hoses and cut the right ones?
 
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