I'm running the fid ev14 2200cc injectors. My tunner is Sean church. On e85 the car idles and drives great but on straight pump gas the idle is rough and the car bucks when I'm cruzing at low load at about 20 inhg of vacuum. So I went back to my tuner and he spent quite a while street tuner my car. The car idles on pump gas at about 12.0:1 air fuel and when in very light load cruzing the air fuel is around 11-12.0:1. The car now drives fine. When my tuner try's to lean it out the car would buck /injectors turning off. He said that the injectors pulse width is already set as low as possible during light load situations. Even though the car drive fine on pump gas now my tuner said long term with the air fuel being so rich is bad for my new engine. He suggest that I buy a smaller injector. I have no other options besides the new fic 1650cc injectors, as Id 1000cc and 1300cc injectors are too small and will max out on e85.

Does anybody have good idle and drivability results with 2000cc injectors on straight pump gas?

Has anyone tried the new fic Bosch 1650cc ev14 high impedance injectors? I ran a web search and there's quite a few high power supras and gtr's that have been switching to these new fic 1650cc injectors from 2000cc injectors because of the same issues I'm having. They seem to say drivability on pump gas is greatly improved over 2000cc injectors.

 

They're just too large on pump gas to get them to handle low loads as they are 2,200cc injectors.

ID is coming out with a 1,600cc+ injector soon, but you're on the right track with going to smaller injectors to regain low load accuracy.

 

FIC overrates those injectors, at best they flow ~1450cc or so. I am using the DW DV2 1500's and the drivability on them is superb.

For the 2200's, you need to run a very low base pressure and then they are manageable on pump gas, but still not recommended. I've used all brands of the 2200's and they really are a straight E85 injector. On pump gas you'll dip into the 1.0 ms PW region and it'll just rape you.

 

This is the reason I don't have 2000s in my car. It comes down to you making the choice based on what fuel you plan to run most. I run my car on pump 95% of the time, was a no brainer for me.

 

Are the fic 1650cc and the. deatschwerks 1500cc injectors the same injector? These are the 2 brand I have been looking at. Do the dw 1500cc drive great on straight pump gas?

I agree that 2000cc injectors are really a e85 only injector.

 

I plan to run 91 octane 90% of the time but I still want to be able to pump in e85 and make 200 extra hp. Not too long ago there were only 2000cc injectors after the standard Id 1000 or id 1300cc injectors and those don't make much over 500whp on e85. That's why I'm asking about info about the new fic 1650cc and the deatschwerks 1500cc ev14 injectors.

 

KP 2000cc injectors on 91 & 93 octane and it idles like stock.

 

2000s run smooth on e85. Idle like sh*t on 93
200 mi on tank e85. 300 mi on 93
93 for winter storage or emergency if no e85 only
Assuming U have FlexFuel setup of course

 

Last time I checked all 2000cc ev14 injectors are the same Bosch injector. They are just sold by different companies. Do u actually have real world experience with pump gas and 2000cc injectors?

 

My idle fuel pressure is ~70psi due to the stock return line and Walbro 485 (flows a ton of volume) with a base pressure of 55psi (I have it set up to where as vacuum disappears fuel pressure actually drops to 55psi and then climbs back up with boost pressure keeping a 55psi at all times except idle/high vacuum). At 70psi on E85 they are a *little* poppy, but not unstable. And no drivability issues (shuffling, bucking at light throttle). If you're not restricted by the return line like I am you should have no problem with these on 45-55psi base pressure and going from pump to E85. I have a flex fuel car so eventually i'll migrate back to pump and see what it's like at 70psi pressure, but I don't expect anything near the 2000cc injectors as the PW just doesn't drop that low on the 1500's. This is all targeting 1.0 lambda, so no trickery.

DW actually gets their injector from a different division of Bosch. This was news to me when I asked, but apparently there are a couple different divisions of Bosch working on basically the same thing?

At what AFR? 11.5? lol. Fairy tales are for kids.

I had *one* car, way back in the day, on a higher displacement K series, that idled acceptably on pump gas (it was a built, cammed K20/K24 turbo setup). If you can increase the engine size/VE to the point where it pulls the injector out of it's massively unpredictable low pulsewidth range, then they work well even on pump. This does not happen often on this platform, at least not on the typical F20/F22/K20/B18 setups I see. I have the DW & FIC on my personal B & K, the ID's on the K, FID's on an F, it's all the same story, acceptable on E85, a nightmare on pump.