E-Spec tests the MAP Ef4 --- 600hp @30psi!!
Nov 21, 2011, 08:06 AM
#31
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Ask and you shall recieve
Here is my build thread of what my car has in it hope this helps you some.
https://www.evolutionm.net/forums/ev...usa-tuned.html
Here is my build thread of what my car has in it hope this helps you some.
https://www.evolutionm.net/forums/ev...usa-tuned.html
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Nov 21, 2011, 11:23 AM
#34
Looking good guys! While this turbo may not be for everyone, its clear there is a substantial market segment in search for this type of power in a stock frame 
And as with all MAP products we will continue to push forward in regards to R&D, we've already got some ideas in the pipeline on how to improve spool specifically for the EF3 and EF4.
And as with all MAP products we will continue to push forward in regards to R&D, we've already got some ideas in the pipeline on how to improve spool specifically for the EF3 and EF4.
Nov 21, 2011, 01:11 PM
#35
Looking good guys! While this turbo may not be for everyone, its clear there is a substantial market segment in search for this type of power in a stock frame And as with all MAP products we will continue to push forward in regards to R&D, we've already got some ideas in the pipeline on how to improve spool specifically for the EF3 and EF4.
And as with all MAP products we will continue to push forward in regards to R&D, we've already got some ideas in the pipeline on how to improve spool specifically for the EF3 and EF4.Two Words
BALL BEARING!
Nov 21, 2011, 03:23 PM
#36
Not going to help spool, but it will help reliability
The EF4 isn't stock turbo responsive but it is great for the power level you get. I mean if you look at Curt Browns 600whp FPgreen, that is the laggiest green ever because he geared it toward top end. (Well I look mostly at evo x graphs but even local 8/9 greens that seems really laggy for a 2.3L...just saying this in case I am a little off base)
Basically what I am saying is the setup really determines spool up and low end power. You can choke the **** out of your setup with stock everything and it will spool better and have better low end but not make **** for peak power. It's all about goals and what you are aiming for.
Spool is total perspective and its not worth arguing at all...its like arguing politics or religion, horrible topic. So basically Erk already covered that they geared this for top end, so spool will suffer some.
I bet its still fun, so who cares, in the end its about keeping the owner happy!
The EF4 isn't stock turbo responsive but it is great for the power level you get. I mean if you look at Curt Browns 600whp FPgreen, that is the laggiest green ever because he geared it toward top end. (Well I look mostly at evo x graphs but even local 8/9 greens that seems really laggy for a 2.3L...just saying this in case I am a little off base)
Basically what I am saying is the setup really determines spool up and low end power. You can choke the **** out of your setup with stock everything and it will spool better and have better low end but not make **** for peak power. It's all about goals and what you are aiming for.
Spool is total perspective and its not worth arguing at all...its like arguing politics or religion, horrible topic. So basically Erk already covered that they geared this for top end, so spool will suffer some.
I bet its still fun, so who cares, in the end its about keeping the owner happy!
Nov 21, 2011, 04:35 PM
#38
Sure ball bearing is gonna gain you that few extra rpms, but is the cost to purchase a bb red or black worth the money you can get one of these turbos for? On top of that I am a big fan of the bb turbos, but lets do another thing lets break down what it costs you to rebuild a bb turbo to a standard journal turbo. Throw that into effect and of the cost and you will see 300 to 500 rpms really isn't worth the extra money you pay.
Nov 21, 2011, 04:38 PM
#39
Not going to help spool, but it will help reliability
The EF4 isn't stock turbo responsive but it is great for the power level you get. I mean if you look at Curt Browns 600whp FPgreen, that is the laggiest green ever because he geared it toward top end. (Well I look mostly at evo x graphs but even local 8/9 greens that seems really laggy for a 2.3L...just saying this in case I am a little off base)
Basically what I am saying is the setup really determines spool up and low end power. You can choke the **** out of your setup with stock everything and it will spool better and have better low end but not make **** for peak power. It's all about goals and what you are aiming for.
Spool is total perspective and its not worth arguing at all...its like arguing politics or religion, horrible topic. So basically Erk already covered that they geared this for top end, so spool will suffer some.
I bet its still fun, so who cares, in the end its about keeping the owner happy!
The EF4 isn't stock turbo responsive but it is great for the power level you get. I mean if you look at Curt Browns 600whp FPgreen, that is the laggiest green ever because he geared it toward top end. (Well I look mostly at evo x graphs but even local 8/9 greens that seems really laggy for a 2.3L...just saying this in case I am a little off base)
Basically what I am saying is the setup really determines spool up and low end power. You can choke the **** out of your setup with stock everything and it will spool better and have better low end but not make **** for peak power. It's all about goals and what you are aiming for.
Spool is total perspective and its not worth arguing at all...its like arguing politics or religion, horrible topic. So basically Erk already covered that they geared this for top end, so spool will suffer some.
I bet its still fun, so who cares, in the end its about keeping the owner happy!
Nov 21, 2011, 05:14 PM
#40
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Nice work erk! Congrats to owner! What time was the final tune done at? But speaking of curts car, he had a green which is in by no way compared to the ef4 , especially if the ef4 is bigger than a black. Only question is , is this still considered a stock frame turbo? Shootout wise is what I'm getting at.
Nov 22, 2011, 07:49 AM
#44
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Nice work erk! Congrats to owner! What time was the final tune done at? But speaking of curts car, he had a green which is in by no way compared to the ef4 , especially if the ef4 is bigger than a black. Only question is , is this still considered a stock frame turbo? Shootout wise is what I'm getting at.
The final tune was done after 11pm-- "Prime time for powa"!!This turbo meets the criteria for any "stock frame turbo" class. Again, I emphasize that a turbo like this can put ANY of the 10sec stock turbo cars into the 9's. It will add 150-200hp @7k rpm to a properly set up car. You'll see a few of these pop up next season at the dragstrip.
Nov 22, 2011, 07:50 AM
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Good job on the numbers, as others state and espec you have to give some to gain some the 2.4 aids for spool at the lower end but cul8tr has added products that allow to compensate in the upper power band as well to balance things out.