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MAP EF-series Turbochargers results thread

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Old Jun 6, 2013 | 05:46 AM
  #1321  
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From: Gibsonton/Kissimmee
Jeff, that was on e85 correct?
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Old Jun 6, 2013 | 08:33 AM
  #1322  
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From: On the track
I had a four hour rolling hill highway drive home and didn't notice any side effect of the crushed DV. Other than a few spirited passes I didn't really beat on it. Just drove home like a sane person would.

MODS: EF2, FIC1100s, GM3 port, perrin filter, catless hks exhaust, COP, ETS 3" with upper and lower pipes.

Yes this was E85.
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Old Jun 6, 2013 | 05:18 PM
  #1323  
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From: Gibsonton/Kissimmee
Well im heading back to my tuner tomorrow to put the finishing touches on my tune with my ef2.5. I'll try and get the info and a possible dyno graph on here tomorrow afternoon.
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Old Jun 6, 2013 | 07:21 PM
  #1324  
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Jeff - Seems laggy for a mivec and small turbo like the EF2? I know Ron spools (30+psi) his Green on his IX at about 3800. It did make very good power and tq though.
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Old Jun 6, 2013 | 09:58 PM
  #1325  
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From: On the track
I'm not sure how I would describe the spool.... no turbo feels like stock to me and I've been quite a few different EVOs. I've even contacted other EF2 owners and compared spool and its pretty much identical so mechanically all is well. Below is an EF2 on pump vs Stock 9 turbo on pump... Here you can see the difference in spool .... but pay attention to the TQ as well. It does't really lose any usable power.
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Old Jun 7, 2013 | 11:56 AM
  #1326  
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Originally Posted by Jeff_Jeske
I'm not sure how I would describe the spool.... no turbo feels like stock to me and I've been quite a few different EVOs. I've even contacted other EF2 owners and compared spool and its pretty much identical so mechanically all is well. Below is an EF2 on pump vs Stock 9 turbo on pump... Here you can see the difference in spool .... but pay attention to the TQ as well. It does't really lose any usable power.
That difference in spool isn't really noticeable on the street. It's not like you're going to be stomping it at 3000 RPM in 3rd gear and feeling a 20-30 wtq loss.

The huge bump in power from 4000-8000 RPM is VERY noticeable, however.
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Old Jun 7, 2013 | 12:08 PM
  #1327  
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Even thought spool/torque are roughly the same, my setup feels a lil doggier down low. It's noticeable, but well worth it

You are right, no one steps on it at 3k on the street or if you are, you are doing it wrong.

I moved on from EF4 this year, but didn't lose too much down low. Replaced with a new MAP t4 kit. The EF4 was a champ though, no issues ever and was the most fun stock frame I had. I will miss it...but not too much.

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Last edited by murlo26; Jun 7, 2013 at 12:17 PM.
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Old Jun 7, 2013 | 12:23 PM
  #1328  
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Originally Posted by murlo26
You are right, no one steps on it at 3k on the street or if you are, you are doing it wrong.
I do...and I'm doing it right 100% useable powerband
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Old Jun 7, 2013 | 12:24 PM
  #1329  
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You are just lazy kracka, true DL style

Everyone else does it the normal way and shifts into a different gear before they step on it. You need an MR full powerband.
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Old Jun 7, 2013 | 12:26 PM
  #1330  
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Not lazy, but sometimes a downshift to pass just isn't needed. My car has plenty of low-end torque to make a clean 5th gear overtake on the highway. Maybe that's why my clutch is lasting so long, I use my entire powerband rather than shifting the car like it's a sportbike
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Old Jun 7, 2013 | 12:32 PM
  #1331  
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From: Gibsonton/Kissimmee
Originally Posted by Kracka
Not lazy, but sometimes a downshift to pass just isn't needed. My car has plenty of low-end torque to make a clean 5th gear overtake on the highway. Maybe that's why my clutch is lasting so long, I use my entire powerband rather than shifting the car like it's a sportbike
Agree. I never downshift to pass. Thats another reason im glad I went with an ef2.5 rather than an ef3 or ef4 like I was originally planning
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Old Jun 8, 2013 | 08:21 PM
  #1332  
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Downshift? Like F&F? I can easily shift 30-40 times in a 1/4 mile stretch.
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Old Jun 8, 2013 | 10:10 PM
  #1333  
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Installing my EF3 next weekend and getting it tuned the next day.
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Old Jun 14, 2013 | 11:10 AM
  #1334  
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Originally Posted by Ramonski
Agree. I never downshift to pass. Thats another reason im glad I went with an ef2.5 rather than an ef3 or ef4 like I was originally planning
You act like the 2.5 spools a TON better than the EF3. You are talking a bit more torque and only 200 RPM. lol. Seriously not going to be enough of a difference to warrant your justification. Personally an EF2 sounds more on your speed.


Also too lazy to down shift? seriously? Why do you even have an evo? Why don't you get an auto-diesel or something?
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Old Jun 14, 2013 | 11:17 AM
  #1335  
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From: Gibsonton/Kissimmee
Originally Posted by mean4g63
You act like the 2.5 spools a TON better than the EF3. You are talking a bit more torque and only 200 RPM. lol. Seriously not going to be enough of a difference to warrant your justification. Personally an EF2 sounds more on your speed.


Also too lazy to down shift? seriously? Why do you even have an evo? Why don't you get an auto-diesel or something?
Lol thanks for your input on how I should spend my money. It's like you know what I want out of my evo more than I do.

And I never stated I was too lazy to downshift. Why would I downshift if I have a turbo setup that can efficiently spool enough in 5th gear to pass people? That's exactly what I was going for. Again, great observation and thank you for trying.
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