May run into some issues (Injectors & Map Sensor)
May run into some issues (Injectors & Map Sensor) Hey guys needed to get some feedback on who has used 80 pound injectors with an F1A with a 3.90 pulley. My problem is that I started off my build (AES 390) with 80 lbs. injectors and my D-1 that was going to be maxed out with a 3.4 pulley and my two small 4.5 twin intercoolers. Anyways I upgraded to the F1A/front mount and now I'm stuck with 80 lbs injectors and a 2 bar map. My 2 bar sensor I here only goes up to 15 lbs. but I'm sure I will be making more than that with the 3.90 pulley. Can someone give me some adivise besides changing out the pulley. I hate spending twice but I fear I just might have to!!
P.s --I'm also running alky..
P.s --I'm also running alky..
yeah you will make more then 15psi, my straight f1 on a 3.7 made 22psi at 6200 and didnt red line in tell 6600 but ran out of fuel.
I was running 80lbs injectors and twin intake pumps with a 2 bar sensor, I band-ad it in the tune as I would see 15psi around 4200 so I set the pe table to add the extra fuel from 4200 up, but ran out of pump about 6100, this is a band ad not the right way to fix it, the injectors by scale where 88% at the 6100
I was running 80lbs injectors and twin intake pumps with a 2 bar sensor, I band-ad it in the tune as I would see 15psi around 4200 so I set the pe table to add the extra fuel from 4200 up, but ran out of pump about 6100, this is a band ad not the right way to fix it, the injectors by scale where 88% at the 6100
yeah you will make more then 15psi, my straight f1 on a 3.7 made 22psi at 6200 and didnt red line in tell 6600 but ran out of fuel. I was running 80lbs injectors and twin intake pumps with a 2 bar sensor, I band-ad it in the tune as I would see 15psi around 4200 so I set the pe table to add the extra fuel from 4200 up, but ran out of pump about 6100, this is a band ad not the right way to fix it, the injectors by scale where 88% at the 6100
I would say around 17-20 at 6500ish, depending what heads you have cam, theirs alot that plays a factor on the boost that it will actually make.
if anything waste gate the cold side I did that for about a year to keep the boost downn to 13psi on my stock engine.
and on the injectors 80lbs will be pushing it if you ever turn it up to max the blower out.
if anything waste gate the cold side I did that for about a year to keep the boost downn to 13psi on my stock engine.
and on the injectors 80lbs will be pushing it if you ever turn it up to max the blower out.
on break in I would leave the blower belt off seat the rings the right way (NA) if you wash a cylinder down your going to kill the engine before you really get to play with it
Why not spend the money to go 3 bar, no more band aiding the tune? I've run the 2 bar before with over 20lbs and it does work but its also nice to be able to correctly read the boost in the logger and tune for it. It sounds like with that combo you are looking to make some pretty good power down the road.
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Why not spend the money to go 3 bar, no more band aiding the tune? I've run the 2 bar before with over 20lbs and it does work but its also nice to be able to correctly read the boost in the logger and tune for it. It sounds like with that combo you are looking to make some pretty good power down the road.
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Verdad Gallardo Why upgrade it 3 times total instead of just twice and do the 3 bar now? What diameter is your crank pulley? You can use that plus the internal gearing of the F1A to figure your RPM at max engine speed.
It is wise to do the 96's, but I'm sure you don't want to spend money again on upgrading the map if you end up running more boost. There really isn't a down side to running a 3 bar map besides the resolution in boost, and that resolution is not nearly as important there as it is out of boost.
It is wise to do the 96's, but I'm sure you don't want to spend money again on upgrading the map if you end up running more boost. There really isn't a down side to running a 3 bar map besides the resolution in boost, and that resolution is not nearly as important there as it is out of boost.
I believe its the 7.25 from ATI. Also is there a 3 bar map sensor that connects to the factory location (back of intake)? I've been reading there's a zr1 map sensor but who's using it?
There is no plug and play 3 bar MAP sensor besides the Duramaxx sensor, which performs pretty terribly in drivability areas. The LS9 sensor has an offset that is negative, which can't be entered into a F-body tune (minimum offset is zero). You can do the old style 3-bar by running a vacuum line to it and mounting it somewhere. 2.5 bar plug and play sensors are out there, which are good to 22psi. They are custom modified factory sensors.
I talked to my tuner yesterday he advised it would be wise to get a set of 96's and go with a 2.5 map. I told him about the 3 bar but he really did not feel it was necessary right now. I believe the 2.5 map goes up to 21 or 22 lbs. The other thing is how much more boost I'll be able to get with a 3.70 pulley I'm on a 3.9 pulley and I really dont know if the 3.70 will put me over the 74000 impeller rpm max the F1A has. So many variables...
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Hi Bob,
Thanks for the info.. I forgot the formula to figure out how to get the impellar speed.. Do you still remember how much boost your car made with that pulley, what map sensor and what injectors you had on it.?
Thanks for the info.. I forgot the formula to figure out how to get the impellar speed.. Do you still remember how much boost your car made with that pulley, what map sensor and what injectors you had on it.?
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E-mail: brutespeed@gmail.comob@brutespeed.com
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What brand are your 80lb injectors? What's your base pressure. Seimens and Motron 80lb injectors are rated 80lb @ 3bar base pressure. LS1 base pressure is typically 58psi, so if you have it at 58psi, they are closer to 94ish lbs at that pressure. Food for thought. I just got my Motron 80's lined out..Took me forever to get the injector calibrations correct.
What brand are your 80lb injectors? What's your base pressure. Seimens and Motron 80lb injectors are rated 80lb @ 3bar base pressure. LS1 base pressure is typically 58psi, so if you have it at 58psi, they are closer to 94ish lbs at that pressure. Food for thought. I just got my Motron 80's lined out..Took me forever to get the injector calibrations correct.