Lol, yeah Tim, that windshield is pretty floppy! Amazing driving and beast car though. Can't believe you were 1 sec off the top car on full slicks while on 80 tw tires.

 

just curious when we are going to see a ball bearing EF series turbo. I would be willing to be a beta tester for an EF3 version if they significantly come under FP's price range. I am already sold on MAP's quality . Would love to rock one of em at 30+ PSI with pump+meth

 

MAP told me they have considered it. I will send in my EF2.5 to be converted to ball-bearing if they give me notice.

 

Yeah I was talking with Chris yesterday seems like it is definitely been talked about, I'd be game

 

Have a few more parts to purchase, but rest assured, I'll definitely be taking my Evo to the strip this year with an EF4. Very excited as it made 400whp/400ftlbs at 5000rpm on 21lbs of boost and no timing...then the cam snapped in half . It was definitely ready to make some jam. I'll be sure to post here when we get some results.

 

I just went to the track for the first time ever and ran my ef3 on my VIII best time of the day with full weight and half tank of gas I ran 12.3 @117 I was getting faster and was only able to make 4 passes I'm sure ill get into the high 11s next time out in two weeks with a few tweaks

 

That was only.on pump gas, right? In E85 you should be running low 11's or high 10's @ 128-132 mph on an EF3 done right.

 

I'm anxious to get to the track when my car is complete... hopefully I'll have some good numbers

 

Wow, okay first of all, what a day!! Ive been constantly talking to people locally and nationally who have been following this turbo. I had no idea there was this many people interested haha. Glad I could be the first to push the **** out of it. As we went through the tuning process Ron (My tuner, RS Motors) thought initially the turbo had freakish spool but the turbo wouldnt spike boost, Ron wanted to try and get it to spike so we could bring the tq/hp on a little earlier but the turbo seemed to be fighting itself. Being that it uses the EF2 turbine wheel and EF3 compressor wheel there is no reason to doubt that theory. I opted to use a Grimmspeed EBC on this round and I'm glad we did. Ron said without it we wouldve been fighting boost taper the whole time, but with the EBC Ron was able to make it do what he wanted. It did make outstanding power as you can see below. We hit 456/407 but were running out of fuel, so we backed off (E65 is what the Zeitronix was reading). The turbo just kept making power. Ron told me to get a BAP or double pumper haha, I told him were good for now. I was a little upset it didnt spool better but the topend is nothing to shake your head at. I'll admit I was fairly skeptical after looking at the dynograph what the car was going to drive like/feel like. Truth be told the graph does NOT do the turbo justice. This damn thing spools so much better than the EF3 its stupid. Finally while just driving normal I can feel the turbo kicking in and pulling me back, my EF3 didnt do that unless I was giving her hell. The turbo has its flaws as stated above, but we dont live in a perfect world either, with that said I couldnt be happier with this setup. It pulls so hard down low and up top I just smiled like a little girl the whole 90 min drive home haha. A huge thank you to MAP is in order here and to Ron as well, he simply has the touch. He amazes me everytime I get to watch him tune.

EF2.5 @ 31psi



EF2.5 @ 29psi (where we left car at)



EF2.5 vs EF3 (also this graph reads low from the EF3, I had a boost leak that day, we ended up at 425/360, still shows the comparisons) I'll have to get Ron to post an overlay of the EF2.5 vs EF2. I felt bad I was printing off so many graphs.

 

impressive... I guess I assumed the 2.5 was more of a 400- 425hp turbo... very nice

 

Yea this was on pump (92) and I'm sure with some better practice I can make a high-mid 11s on the set up now but I'm getting my e85 tune next Monday and heading back to the track to make a mid/low 11. Not sure if ill break 10s yet, that's the long term goal and my car is pretty much full weight minus a few little things (crash beam, ic sprayer and cf trunk and hood, and of coarse the easy striped trunk of tire tools and carpet. Ill post results and time slips nex time out to really give this ef3 justice.

All in all I'm really happy with the ef3 450/350 is a pretty fun set up on pump gas

 

Also as more EF2.5 results get posted we'll work the bugs out of this turbo, maybe theres some tweaks to the design MAP can do or maybe its the wastegate causing issues who knows, but this turbo certainly out spools the EF3

 

It's something setup related on your car or something I'd say.

Your EF3 obviously spooled really late too but the EF2.5 outspooled it as it was supposed to so whatever was "plaguing" your EF3 remains on the 2.5 and I doubt its turbo related.

Regardless, looks like a great number, but your midrange could probably fatten up a bit.

 

How would it be my car? Ron said all these EF turbos spool like this, hes tuned about 4 EF2's and a whole bunch more EF3's and said he thinks it maybe the wastegate. We overlayed tons of EF series turbo graphs and they all have the weird boost taper, where they look to be spooling really fast then all of sudden push to the right. This was spooling right on par with the green until it hit 20psi then it started going way right instead of holding that same line.

 

I was basing it off your response where you were kind of implying that there was something wrong with the spool.

I forgot you have an evo 8, so no mivec doesn't help. I am an Evo X guy so I don't really keep super up to date with spool characteristics, it just looked to be spooling a bit slow for an EF turbo. My EF4 spools faster, but I also have mivec and a 2.2L.