injectors keeping up?

optionizerSS

Active Member
Apr 23, 2023
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So have a 2005 Roush Sport but it has JBA shorties, FRPP intake, FRPP 62mm TB, Steeda CAI , FRPP Hot Rod cams, 4.10's and a carbon fiber driveshaft. Car is also dyno-tuned but the tuner and dyno sheets are gone. I bought the car around X-Mas time and due to western PA weather have only had it out a couple of times. The car seems to rev extremely quick. Twice now I have thought that I hit the rev limiter. First time was at the top of 2nd gear. That was the first time I had floored it and it shot up quick. I let off and tach looked like it was at about 6000 RPM and coming down. Next time I was in first and floored it and seemed like I went about 25' and hit it again. Tires never spun either time. Same thing. Glanced down and around 6000 RPM. But it didn't seem to stutter like a rev limiter so I'm wondering if it might be running out of fuel? Pretty sure they are the stock injectors. Do you think I would need bigger injectors? The ones in there are a tan color. Are they stamped as to what they are? Anyone with a similar setup run into this and need to upgrade injectors? Or do these tuner guys set up their rev-limiters to limit fuel (which I think would be a horrible idea)?
I plan to test it a few more times and try to pay closer attention to what RPM it cuts out at once the weather clears up.

Thanks!
 
Why do you jump directly to injectors?

JBA shorties - zero HP
FRPP intake - some HP
FRPP 62mm TB - some HP
Steeda CAI - zero HP
FRPP Hot Rod cams - HP moved to higher band
4.10's - zero HP


Pull codes.

What kind of shape is your ignition system in?
 
Why do you jump directly to injectors?

JBA shorties - zero HP
FRPP intake - some HP
FRPP 62mm TB - some HP
Steeda CAI - zero HP
FRPP Hot Rod cams - HP moved to higher band
4.10's - zero HP


Pull codes.

What kind of shape is your ignition system in?
I had read where a few people had upgraded their injectors. And it felt like a fuel problem but possible it's ignition. as far as i know the ignition is stock