1000cc injectors ?
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Joined: Sep 2003
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From: S. Florida
1000cc injectors ?
Can I use these injectors w/ the stock secondary fuel rail or do i need to buy the aftermarket rail. http://www.rx7store.net/product_p/bosch%201000cc.htm
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Joined: Nov 2006
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From: morrisville pa
whats the largest injector you can run on the factory ecu. I was thinking 720cc primary and 1680cc secondary. looking to pull as much power as posssible with out blowing up.
My fc already has the high flow fuel pump, 3mm apex seals, and is street port. should i look into higher flow fuel rails and if so does anyone know where to look for good pricing.
My fc already has the high flow fuel pump, 3mm apex seals, and is street port. should i look into higher flow fuel rails and if so does anyone know where to look for good pricing.
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Joined: Sep 2003
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From: S. Florida
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Originally Posted by licensedtothrill
whats the largest injector you can run on the factory ecu. I was thinking 720cc primary and 1680cc secondary. looking to pull as much power as posssible with out blowing up.
My fc already has the high flow fuel pump, 3mm apex seals, and is street port. should i look into higher flow fuel rails and if so does anyone know where to look for good pricing.
My fc already has the high flow fuel pump, 3mm apex seals, and is street port. should i look into higher flow fuel rails and if so does anyone know where to look for good pricing.
I'd say just bite the bullet and spend an extra $600-900 tops on a megasquirt and LC-1 wideband. That way you don't have to worry about any new parts, you can tune it yourself, and not worry if the ECU can handle it.
Joined: Feb 2001
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From: London, Ontario, Canada
Originally Posted by licensedtothrill
whats the largest injector you can run on the factory ecu. I was thinking 720cc primary and 1680cc secondary. looking to pull as much power as posssible with out blowing up.
My fc already has the high flow fuel pump, 3mm apex seals, and is street port. should i look into higher flow fuel rails and if so does anyone know where to look for good pricing.
My fc already has the high flow fuel pump, 3mm apex seals, and is street port. should i look into higher flow fuel rails and if so does anyone know where to look for good pricing.
You can run some pretty huge injectors on the stock ECU. The problem becomes overfueling the engine while you aren't under boost. Upgrading the secondaries only is a way to avoid this but then the transition between the primaries and secondaries becomes ugly. Start leaning things out with a piggyback and you then end up with a lean spot at the crossover point which will pop the engine (and a great number of engines are killed because of this).
So if you are going to install larger injectors on the stock ECU, about 800CC is the biggest you can practically go on the primaries, and about 1000CC on the secondaries. Even that will be difficult to get right especially at the crossover point.
Thread Starter
Joined: Sep 2003
Posts: 3,156
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From: S. Florida
It supposed to be able to handle it. You can tune fuel and timing on the new one. But im trying to get the car into the 300's and from what ive read the 720's wont cut it.
do these injectors drop into FC stock fuel rail? or is it the connector different? im looking for some 1000cc injectors myself and am having trouble finding some that are drop-in, as in the connector, low imp is ok. trying to stay away from the venom **** too lol
Originally Posted by xboxthug13b
which 1600cc can we use for secondaries on stock s4 rail?
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Joined: Nov 2006
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From: morrisville pa
It’s been a while since I have been on this page. My project got put on hold for a little while but now its up and running again. I just shipped out my ecu to Rtek to have the 2.0 upgrades done.
I’m currently running 550cc primary injectors and waiting for shipment of my 1000cc injectors. I have one additional set of 1000cc injectors that don't fit the factory fuel rails. I’m planning on putting on in the intake to only be triggered and spray for the small amount of time when the primary injectors cut out to when the secondaries are firing full. This should prevent the ugly lean spots; I would rather run rich for half a second than to worry about popping an engine.
Also with the Rtek I’m going to set the rail change over to be at the same point as the turbo spooling. I went with a large 60-1 T4 turbo. Local shops and contacts said this should give the boost the feeling of flipping a light switch, little power then huge power with little transfer between. Should be fun.
I’m currently running 550cc primary injectors and waiting for shipment of my 1000cc injectors. I have one additional set of 1000cc injectors that don't fit the factory fuel rails. I’m planning on putting on in the intake to only be triggered and spray for the small amount of time when the primary injectors cut out to when the secondaries are firing full. This should prevent the ugly lean spots; I would rather run rich for half a second than to worry about popping an engine.
Also with the Rtek I’m going to set the rail change over to be at the same point as the turbo spooling. I went with a large 60-1 T4 turbo. Local shops and contacts said this should give the boost the feeling of flipping a light switch, little power then huge power with little transfer between. Should be fun.
I’m planning on putting on in the intake to only be triggered and spray for the small amount of time when the primary injectors cut out to when the secondaries are firing full. This should prevent the ugly lean spots; I would rather run rich for half a second than to worry about popping an engine.
You could just install a standalone that will transition the injectors smoothly.
But its your project
edit: set the rail change over?? WTF is that?
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