deltr0n`

well your gonna do the fuel mods instead of turbo right? so just get 2 720 secondaries for now, and keep the primaries stock... your not going to have 400rwhp right away, i think you should buy better ones later on down the line. so yeah...

PUMP
RRFRP (Rising Rate Fuel Pressure Regulator)
2 720's
SAFC
FMIC

with that tuned i think you should have close to 300...then when you got the money to either upgrade the turbo, or buy a whole new one, you'll have PLENTY of fuel to support it!

i wouldnt get the Rtek, just get the RB FCD. easier and cheaper.

deltr0n`

oops...

MazdaRx7Racer4Life

If im looking at 300 for now with a good streetport and fuel system then thats the way im gonna go. In the future though, would I upgrade the secondaries to 720's as well? and will the safc be able to control all 4?

Digi7ech

iTrader: (1)

"i wouldnt get the Rtek, just get the RB FCD. easier and cheaper"

Why not? The Rtek is so much easier! It's removed the FCD so the Fuel maps actually work instead of tricking the ecu. It's removed the AWS and added a useful anti Flood.

If I hadn't already bought a FCD and ECU then I woudl have done this.

MazdaRx7Racer4Life

the only real reason I was thinking rtek7 was because of the antiflooding device.

NZConvertible

Not even close. The 550/720 combo is only enough for 340-350fwhp.

deltr0n`

oh i didnt know that, thought it was the same as an FCD, that sounds cool then.

as for the SAFC being able to control all 4 im not sure... i would think it should be able to though.

NZConvertible

The S-AFC doesn't control the injectors, the ECU does. All the S-AFC does is alter the AFM signal to fool the ECU into thinking more or less air is entering the engine.

MazdaRx7Racer4Life

can it TRICK it into being able to send enbough fuel to all 4 injectors?

bryantho

Yes.

Bukwild

yes it will run it but not safely. You can buy a AFC for 300 and a rebuild for a 1000. Or buy a standalone and do it safely. I am a buying a haltech from k2rd today if they ever answer the phone. Ask a few people who have popped their motors running afc's.

MazdaRx7Racer4Life

hmmm......haltech............the price keeps on going up, lol, but thenagain, I guess speed isn't cheap. Oh well, little by little then.

Crusader_9x

the ret7 chip 1.5 version lowers the secondary point to 3500 instead of 3800, ups the primary injector cap by 5%, and it retards all timing one degreee above 9 psi. it is a really good investment. heres teh link http://www.pocketlogger.com/?pid=rtek7feat
also if your gonna keep it piggy back then bigger secondaires and a bigger pump is what your gona need. a fmic is a really good invesment as well.

MazdaRx7Racer4Life

but if I get 720's all around, a bell engineering pressure regulator, a 255 comp tech pump and an safc, it won't be enough for fuel? Safc isn't safe eh?

deltr0n`

i think you should just hold off on the safc, and the injectors. run stock for now, you'll have plenty of fuel for up to 15lbs. from what i understand.

just get yourself a rich/lean meter or gauge and keep an eye on it. and until you have enough to buy and install a standalone, THEN get the injectors and put in a new turbo at the same time. because if you get an safc it will be a waste later on down the line because you will need a standalone.

so just get...

the COMP Pump,
the RRFPR,
and the FMIC

you should be happy with that, untill you can save more for standalone and a better turbo.

NZConvertible

Bollocks. An S-AFC is not unsafe. A poorly tuned S-AFC is. Come to think of it a well-tuned S-AFC is far safer than a poorly tuned Haltech.

If you use anything to adjust mixtures and you pop your engine as a result, blame the tuner, not the hardware.

MazdaRx7Racer4Life

what about the walbro pump, its 255 as well, but its cheaper, with the rrfpr and the fmic.

deltr0n`

walbro isnt what its all hyped up to be, its a CHEAP way of going about doing fuel mods, which is why most 7 owners buy it, but people who know what they are doing get better ones. ive talked with people that have first hand experience, not just what people say on here.

ilike2eatricers

Didnt 1fastt2 use stock 550 primaries and 1600 secondaries (not sure ) and make over 400whp?

The point I am bringing up is that power can be made with the stock primaries if tuning is really good.

gsracer

If you're using a stand alone, of course. A lot of people are on safc's or other fuel controllers that are still using the stock ecu.

The walbro is a good fuel pump that will suffice for 99 percent of most t2 owners.

NZConvertible

Yeah, but he asked about using 550/720, not 550/1600.
You have to be very careful with the stock ECU, because the secondaries can't come on before 3800rpm. So you're limited to ~150hp @ 3800rpm. Even if your total fuel flow capacity is sufficient, you can run out of fuel before the secondaries come on.

This is not a problem with programmable EMS's because the staging point is adjustable.

MazdaRx7Racer4Life

the rtek7 makes them come on at 3500

NZConvertible

I can't see that making a huge difference.

Crusader_9x

it also increases the primaries fuel cap by 5% as well as retarding timing an additional one degree over stock for every pound of boost over 9.

MazdaRx7Racer4Life

so bacially, before I make the 15psi jump on anyturbo, I should have the 720's all around, the rrfpr, the comp tech fuel pump, the fmic, bov (just incase), the rtek7 (can't hurt) and the safc?