good thread. The EF4 was on my radar and after seeing these results on stock blocks it seems like this will suite me needs when I get bigger turbo and 272s

 

Yes, my friend. The EF4 will be better for the stock block with more than enough room for you to grow when you are ready to push it.

Enjoy it, my friend.

 

I'd personally stick to an EF2 or EF3 on the stock block; you won't even come close to taking full advantage of an EF4 and have to deal with the increased lag (pointless if you can't fully take advantage of the turbo).

 

but does that lag actually end up saving the block due to the prolonged torque curve?

EDIT: I've never been in any other Evo except my own so I don't know how severe the lag is when you guys say lag... I can't compare it to a FP green/red/black because I've never been in any other Evo

 

"Lag" is one of the most subjective terms that you will find floating around the EVO community. You will just have to either ride in other EVOs with different set ups or through trial/error with your own. I went from a stock VIII turbo to the EF4 turbo with a 2.4LR. I notice a degree of lag but that is expected with such a large turbo.

 

would an FP Green make full TQ numbers before an EF3? What about an EF2?

Where does an FP Red fit in that spectrum of full TQ? (I'm trying to run stock block without adding a custom window to it...)

 

your too late sir. I already bought the ef4 from Levar

 

Depends on who you have tune the turbo and if you plan on upgradeing motors down the line. If I had the money or had everything to rebuild at this point that graph would be a lot different. I wouldn't have a drawn out hold back tq and I would have more power and not cap it where it is at.

 

look at the graphs and notice how long it takes my turbo to spool to 36 psi. That is done by design. When I ran a mbc I would get full boost by 4500 4800ish.

 

yeah I noticed that when you said you had an EBC. So do you think your car would be slower than a car at less power that hits full boost quicker and has it for the whole powerband?

I guess I'm wondering if peak numbers made actually sacrifice the overall speed of the car. In other words a 600hp car may be slower than a 550hp car that hits boost quick and makes full power sooner??

 

No that has nothing to do with it really. I went to the ebc for the fact I can hold my boost till redline. With the mbc you can't it tapers to whatever. With that said it has nothing to do with sacraficing power anywhere. Remember the car is tuned to sacrafice tq in the mid range and prolong it being I do have a stock block. It is basically it is putting less stress on the rods and allowing the tq to ease its way into the system rather then a huge jolt that will break things if I kept going time and time again. Not to include with the ebc and allowing boost not to taper that things a monster top end, it just wants to keep pulling and pulling.

 

does it drop off real bad when you shift?

 

1ZE57R400394427776 is the tracking number, my friend. UPS picked it up today so the number should be in the system by close of business.

 

Big turbos on stock block cars make for boring driving under 5000... and a narrow powerband because a stock block is limited on the RPM on the upper end...

It's always a great idea to actually drive a car built like yours before you spend big bucks to hope you like the outcome

Hope you like it.

 

Please make a thread showing the results once you have it all buttoned up, my friend.