Yep, as easy as π

 

Aby - why don't you use 1200cc injectors and a dual Walbro setup? Game, set, match.

 

FoMoCo 160#, Stock ECU and MAFT Pro (dialed back -25%), idles somewhere between 11.5-13.5 (random) and will cruise and work at WOT fine. Modded 255 pump for the time being, but I am going to run dual pumps and smaller injectors because it seems that it can be kinda funny when its cold. Other than its great.

 

According to the AEM, 1200s+dual at 506whp run about 70% IDC from memory on E98. On a pissed off Red it might be pretty close.

 

interesting thread.. I run the 2.5 Ohm Ford Motorsport 1600cc injectors myself, both on the Hydra EMS and now on the AEM EMS (with resistor pack). This is all on pump gas BTW.

On the Hydra (which had built in injector drivers), I was able to start and idle pretty much like stock at stock AFR's etc. Part throttle stuff was fine also.

Fast forward to the AEM, and I can no longer idle at stock like AFRs, now floating in the high 12's. Cruising is no better either, running in the 12's or 13's sometimes. Part throttle driving is VERY choppy and unpleasant, and combine that with an EMS that seems to only be able to control the injectors if it is dumping fuel through the engine, and I'm not really a happy camper at the moment.

I'm actually mulling over my options at the moment also since I just picked up the AEM injector driver box, but am unsure as to whether it will allow the same degree of control that the Hydra gave, or whether the AEM is just not as good in this respect as the Hydra.

My other option is to swap to the 5 Ohm versions of the same injectors, but I have no idea as to whether that makes a difference...

With the resistor pack w? AEM, WOT stuff is fine. Everything else though is meh....

 

We have a Miata at the shop running Five-o (Never heard of them either) 1600's running a Tec 3. It was supposed to run E85 but I don't think it made it out of the driveway before it got sold and left to sit. I think it idled before we pulled the plug on it but I am not sure.

/brox

 

well i think u shud go wid 1200cc ...
but i dun under stand that why im maxing out my 1200cc at only 28psi boost ,which i shudnt be : (
my mods in my signature ....
sombody help me also ...
ive got 1 intank and 1 inline walbro ...
wat would be the diference in my curent setup and the double pumper from bushur?
is that gona help me ?

 

I wonder how much the IDC would drop going to E85. Also, I wonder at what point do the fuel lines/rail become a restriction on E85.

 

Put the car on a dyno and monitor the fuel pressure. You might not be maxing your injectors but maxing your pump, What brand of injectors do you have?

 

just get the ams mani with dual rails...
should sort you out just fine.

 

ive got pte 1200cc injectes .ive been told that il solve my issue wid twin intanks .we dun ave dyno here in my country also. Btw wats the diffrence in my current setup than double pumper intank?

 

I would go double pumper and see where you are from there, also are you on the factory regulator? They rarely ever go bad but if you can switch it out with a friends to test it try that.

 

Just to add my 2cents......i'm just waiting for our order of PTE inj to come in Mon and then i can comment more on drivability.

I'm going to 1600's in conjuction w/ Buschur's double pumper to feed my 35R car with E85/91oct/118oct race gas

I'll be using all stock lines, rail, and regulator until further need to upgrade.

 

There seems to only be about a 5% difference between E85 and E98 from what I have seen on my car and Lucas'. The fuel rail and lines become more of a restriction relative to what pumps you are using too. On twin 255's and stock honda lines (smaller I know) our head fabricator ran out of fuel on 1600s in his CRX at about 530whp. I am not talking 80%, I mean out. He has since upgraded to dual -6 feed and a single -6 return with just an off the shelf AEM rail. He made 572whp at 24psi last time he was on the dyno with low timing and has fuel for 28psi.

Bringing it back to our realm a little closer, we have a customer car that has twins and 1600s in a 1G DSM. The car made 542whp maxed out on e98 on stock lines and an aftermarket rail. The same customer built a different 1G with dual rail 1600s and a Magnafuel King Sumo pump. It has -8 dual feed, and -10 return. On just the primaries the car made 680whp before we started feeding in the secondaries. As it is the car made 820whp with only 30% IDC on the secondaries and 70% on the primaries. Total fuel flow definitely seems to be more important than injector size for the most part.

 

No, they flow only slightly more than RC1000's at 43psi base.

At 55psi they flow very close to 1200cc

RC1200's and RC1000's cost the same so I just tell people to buy the 1200's if they want RC's.