Right now I have the stock injectors and they are at 97% IDC at 21~22 at high RPMs. I have a set of PTE 880 that I have not installed yet. If I install them will I see any increase in power or it is just a safety margin and being able to run more boost. Mods in sig.

 

Yes. This however first assumes the AFR isn't too rich in the first place. If your running out of fuel, your running out of horsepower.

 

Apologies for jumping in as my question is almost the opposite of the OP's. I was wondering if anyone knows if having too high of a ceiling is an issue. What I mean specifically is that I'm purposely going a step or 2 higher than I need on injectors in order to future plan the possibility of running e85. I assume this isn't an issue, though.

 

Depends on your AFRs currently under WOT and in higher RPM and if you are accualy running out of fuel. If you are not running out of fuel and your AFRs are around 11.5pump 11.0 meth, then your fine and putting in a larger injector won't help you unless you are needing more fuel. If you put them in your car will have to be tuned and I have the PTE 880s. Love them and they are good for 550+ on meth so you have room to grow into them if you are going to run meth later down the road. I would and well worth the money IMO

+1

NO! You can scale them and turn down the duty cycle. I would not go above 1000cc on your setup currently. I would call ER and ask them what they suggest. I know that there are a few shops that won't even tune a car if your running stock turbo and have larger then 880cc injectors. I personally think that you would be okay with 1000cc on your setup.

 

^thanks, Mike! My next batch of upgrades will include the Red, the Magnus, and some other goodies which is why I'm going 1200s. The guys at ER didn't balk at the 1200s but I always forget to ask them about that. Thanks for the info re: duty cycle. That is what I expected could be done!

BTW - my hope is e85 will become available at which point I would add another walbro and pretty much be ready to rock the flexfuel!

 

Ya 1200cc is really what you need for a red on E85. I'm honestly not sure how 1200cc will work on a pump stock turbo. I think that would even be pushing the limits on my setup! Running richer is safer though! Hello plugs every week though.

I'll have to let you know about the Magnus when I put it on. I'm not getting my hopes up because I may not get but 5hp since my turbo is like a fat kid that just ran a mile and breathing through a straw

Ya we are suppose to get E85 up here on the Island next month so I might switch! There is E85 in marysville and Everett just to let you know

 

Right now it is about 11.2 AFR after peak load and about 10.9~11.0 AFR at redline. Idle and driveability is nice even with the AC on. I am not sure if the PTE will hurt my idle and low speed characteristics.

 

IMO your car sounds on point, no need for injectors unless your upgrading your car more. The 880s won't change much of anything and after a tune you will idle like stock injectors

Now you can prob tune the boost up to 25lbs+ and at that point you may need the 880s. What is your fuel? Pump 93 right now?

 

Yes Pump 93 (Shell). I was thinking about the spray patterns with a long pulse width on the stockers. The Walbro helped keep the AFR on track. I am on the stock airbox with a works drop in. I am thinking about modding the airbox for a little more airflow and check the AFR again.

Right now EvoScan shows just over 2000 Hz of AirFlow from about 7000 and on.

 

You don't need injectors and won't see an increase in HP from injectors....Generally the rule of thumb is you can get a bit more power by running a tad leaner than you are running (less fuel)....Try tuning the car to more like 11.5 AFR and see if you can feel a difference, if not go back to 11 (for added cooling)....

 

+1 On 93 you should still be pretty safe at 11.5

 

I'll see if I can beat you on the Magnus. I should be getting mine on this week, but not tuned until the week after.

Hey, I resemble that fat kid breathing through a straw!

There is e85 in EVT? Where at? Marysville is just a bit too far in the wrong direction, but I might be willing to get to EVT with a couple jugs as backup. Hmmm...

 

haha O I can beat you if you stay stock turbo! If you upgrade to red... well not so much.

I think the E85 is on base in EVT. Go to mapquest and search E85, it may show you.

 

haha, no I meant beat you on the install. none of this "my father can kick your father's ***" on here - unless we hit the strip. I'm on the stock clutch anyway for now, so you will definitely beat me in that regard!

 

How do you find the warm starts?