I have a MP5. I just check and the gas is rated at 91 and up, so I guess that is good. I am just wondering if I am only running at around 5-6 psi will I still be experiencing knocking in higher rpm? And StuttersC , the fuel management you talking about , is that the normal car ecu you talking about or a addon fuel management unit.
Which Turbo Kit is better?
- Thread starter renaissance
- Start date
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- 2002 BJFW, 2007 BK3P, 1979 SA22C, 2005 BK3P
The normal ECU does not do an adequete job of providing fuel under boost. The fuel management that the Flyin Protege kit has (both Stutters and I have this) is a rising rate fuel pressure regulator and additional fuel pump. The fuel pressure regulator (which you will see referred to as an FPR, AFPR, FMU) adds more fuel proportional to the level of boost you are running. Spool Turbo also uses an FPR for some of thier kits. Corky Bell (designer and turbo guru) and Ken from FP have said that the Protege and Protege5 can run 8 psi of boost without knock at 90 psi of fuel pressure using the FPR.
The HiBoost kit, and a few others, uses a "piggyback" computer that completely remaps the car's fuel curve and controls the fuel system instead of the ECU. this is a more expensive method but provides enough fuel to run higher levels of boost. Juan at HiBoost has said he feels the Protege can run 10 psi of boost this way.
there are also standalone systems that control both the fuel maps AND the ignition timing. again, even more expensive, but controlling both the ignition and fuel allows for some truly high horsepower numbers. HiBoost has run 14 psi on stock internals this way, which to me seems a little high. The system FP is researching in this vein would allow for 12 psi on stock internals.
whatever you decide to do, i would heartily reccomend a secondary inline fuel pump. the stock pump, over time, will not be sufficient enough to provide the fuel needed to run boost. this is a research proven fact.
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- 2002 BJFW, 2007 BK3P, 1979 SA22C, 2005 BK3P
This is from the Bell Engineering website in regards to the fuel pressure regulator;
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- 2002 BJFW, 2007 BK3P, 1979 SA22C, 2005 BK3P
Remember as well, the higher horsepower you go, the more strain you put on the other working parts of your vehicle. I for one do not trust the transmissions in these cars to handle supreme amounts of power. There have been more than a few transmissions, manual or auto, that have been cooked - with or without modification to the car. you might want to consider things like a heavier duty clutch, a limited slip differential and motor mounts to go with your turbo project.
anarchistchiken
Member
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- 03 Silver Protege5
How much did you pay for your custom turbo, jeff?
markmurray77
Member
Since you are Canadian you might want to check out www.essentialspeed.com Great work and you would save all the duties and tax. Talk to Kevin there he really knows his turbos. You should also be able to go to Sunoco if you have it where you live, they have 94 octane
TTYmushi said:
THat is the way Fp designed the kit. For those that only have 91 octane. A P5 or regualr sedan can do 6 PSI no problem with the FP kit indefenitly and still cross 100K miles of reliabilty. Even with there "crude" fuel management system, which by the way, under 8 PSI isn't so crude. Corky builds basicly the Best RR-FPR in the buisness.
Also many other kits still use Flyin Protege O2 signal voltage clamp.
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Which brings us back to what I said intially...
StuttersC said:
Well I can't agree that FP is the best becuase for me they are not.
1. If you need to retain the factory emissions equipment (I don't)
2. Only have, at best, 91 octane (I have plenty of sunocos with 94)
3. Can live with only 6 PSI of boost (I can't)
Then the FP is by far the best choice. If I had to choose again now I wouuld probably give Wagnor or Hiboost a much better look.
Also Chris, I have to say, for FP to stay very busy in Miata work means to me they have chosen there prority and its not the protege. To me this is unacceptable. If your going to start kits like this you need to see it through. Fp spoke of better fuel management and kit upgrades form the beggining and have shown nothing to indicate they have prosued it in any way. Saying they will adopt a link system is fine, except Terry already did that 2 years ago.
Terry and Hiboost have other jobs on there plate but made the Protege a priority, that means alot to me. As it does to most turbo kit buyers. I don't want my car to be treated and consdiered a bastard child of sorts beacuse a company decided to branch out then ingore it.
1. If you need to retain the factory emissions equipment (I don't)
2. Only have, at best, 91 octane (I have plenty of sunocos with 94)
3. Can live with only 6 PSI of boost (I can't)
Then the FP is by far the best choice. If I had to choose again now I wouuld probably give Wagnor or Hiboost a much better look.
Also Chris, I have to say, for FP to stay very busy in Miata work means to me they have chosen there prority and its not the protege. To me this is unacceptable. If your going to start kits like this you need to see it through. Fp spoke of better fuel management and kit upgrades form the beggining and have shown nothing to indicate they have prosued it in any way. Saying they will adopt a link system is fine, except Terry already did that 2 years ago.
Terry and Hiboost have other jobs on there plate but made the Protege a priority, that means alot to me. As it does to most turbo kit buyers. I don't want my car to be treated and consdiered a bastard child of sorts beacuse a company decided to branch out then ingore it.
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1st MP3 in NH said:
I see your point. However, keep in mind they also got a new dyno. They need plates for it to run the Protege. It takes time to also do the Link correctly. I know Terry did it two years ago, but why did he switch to something else?
There is more to it than most people think. And this makes me a little worried when things just appear on the market like HiBoost with their kit.
Personally, I'm willing to wait out and see how long it takes FP to get more stuff. Their Miata market wasn't built over night.
I know Terry has been working on it since day one, but there are things about his set up that aren't very appealing either. With his stand alone you have to trade in your alternator...You shouldn't have to.
I'm going to stick with FP for a number of reasons. Those reasons are becuase I know they can make some serious stuff as evidence with their Miata pieces. I'm willing to wait.
Yes it's nice that they are in Grand Junction and I am in Denver, but I would still go with them regardless.
The fact that their track record is proven with the Miata market makes it worth my time to wait.
