I got tuned on e85 on my ef3 earlier this month and made 506/404 @31lbs ill try and get a dyno graph up once I can get to a computer

 

what are the details on your motor?

stock block?

 

Was type of dyno was this on? 504@ 31lbs on e85 sounds low. It might just be me though.

 

my EF3 on stock cams made 450/350 on 93 octane in the colder weather

 

This is about hat I thought it should be making, thank you.

 

Why is that low? On a stock block dynojet I'd say that's pretty decent, the tq is a bit low but hp is good

What dyno? stock motor?

 

I just thought that an ef3 would be at around 550 on e85 @31 lbs. it seems like that turbo is maxed out at 505hp. Idk though I'm not an expert, I was merely speculating.

 

Virtual Dyno... I know... but when I move back to Austin in 2 weeks I will get a retune and hopefully find a dynojet to strap it on to get real numbers. I did 2 runs on the same road going both directions, so the numbers should be accurate. I wouldn't feel comfortable posting something that's wrong. My car is set up to breath up top and the engine seems to do just that. Holds boost 100% all the way to redline

 

What settings are you using on VD? I made 437/400 on mustang dyno after the 456/407 in my sig. I did some runs the other day on my VD and cannot come close to my actual results haha. One was 450/395 and that's 3rd gear of course and theres no leaks. I'm running the evoscan v2.9.

vehicle weight -3150
me - 170
correction factor - 1.09
dynojet setting

not sure why its soooo far off. I was assuming id be around 480/440+

Anyone point me in the right direction?

 

Stock block for now. Yea it seemed to be out of breath or I really need to port my head. This was done one English racings dynojet, and on pump gas I made 450/350 on pump 92 @26.5-27 lbs

 

its not off. its telling you the truth. its just a number don't worry about it.
sad thing is most people don't know how to use the program properly and give it a bad name. i was once one of those people, but learned the hard way it is very important where you do pulls. the roads must be bump free and smooth and flat. you are clearly using it properly if you think your numbers are low

also i tuned his car. so you know his numbers are no bs. also his cars pushing 28~psi at redline so thats why hes making such good power with his mods & fuel & elevation.

 

If your car breathes up top you wouldn't be holding as much boost as others...just saying

Boost is a measure of restriction, if you create boost, that means you have a restriction. So its better if you don't have boost or it tapers, that means your engine is eating it.

I think people sometimes forgot what "boost" really is.

So on two given cars, one with no ported head and one with, if everything else is equal and the two have the same turbos. The ported head one will make more power with less "boost". If you are holding more boost with ported things, you are pushing the turbo harder or have a better wastegate setup.

 

haha my virtual dyno is more tough than my tuners mustang dyno lol.

450/350 on dynojet with 93oct and only 27psi is nothing to sneeze at. Especially on stock block

 

This is something I have never heard in my life. So by your theory a car should spike to 30psi and then taper to 15psi and that would be faster than a car that hits and holds 30psi, continuously making more and more power to redline...? I don't quite follow you on this one

 

You aren't following the concept I don't think lol.

There are two reasons boost tapers....(well maybe more when you count back pressure issues or doing it on purpose via 3port etc)

1. Turbo can't flow more...
2. Wastegate can't support it, possibly from backpressure, so you need a stronger wastegate.

Again, boost is a restriction, just because you make more boost doesn't mean it should be more power or anything necessarily.

Boost is restriction. I was simply pointing out that implying one has a "high flowing setup (cams, head, exhaust etc)" contradicts the fact that you are holding boost to redline because of that high flowing setup.