IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Lexus IS250 3GR-FSE Swap - Possible???

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Old 11-21-16, 01:16 PM
  #76  
PAVGR
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Originally Posted by Nixcision
Yeah I reached out to RR about remapping my ecu to accommodate a 3gr swap (and ultimately a supercharger) but have yet to hear anything back.... maybe they're not interested..........

The last time I mentioned the HKS kit to Rafi, he didn't seem too happy about it, so its possible they don't have any interest in ecu tuning for another company's product.

They did some really impressive work with their supercharged ISF, so I'm eager to work with them on something if they're interested -- at the very least a 3gr swap ecu remap as Jeff mentioned earlier
I ll be carefull with my beauty and perhaps something will come up!
Old 11-21-16, 11:15 PM
  #77  
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Anyone have any idea where I might source a 3GR-FSE from?

Have only found 2 on ebay - I'm located in Canada, and the two are thru a vendor who won't ship here... the mileage on them was not ideal either.

If anyone has any suggestions please let me know.
(Jeff I have sent you a message as well lol)
Old 11-22-16, 09:13 AM
  #78  
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So I heard back from RR Racing:

Rafi said that unfortunately its not as simple as copying maps from one ecu to another as theres hundreds of maps.

Also for the isF they did, they put 100+ hours into tuning, so my "ecu project" would be a one off and wouldnt be worthwhile as they aren't reeleasing a kit for the 250.

-- so looks like I will have to look into running a piggyback if I swap AND supercharge.
Old 11-22-16, 11:24 AM
  #79  
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Jeff if we use 350s injectors will it help ?
Old 11-22-16, 05:43 PM
  #80  
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Wow! Nice! I will seriously consider this...IS300 MT!
Old 11-22-16, 05:50 PM
  #81  
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Originally Posted by Nixcision
This is an interesting development.
My basic thinking was 3gr: 250hp + supercharger
Mark X Supercharged is 3GR + supercharger but I am not sure which ECU mapping they are using (Jeff: any input on that?)

And.....Mark X has no MT
Old 02-01-17, 02:24 AM
  #82  
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Bumping an old thread, but can I use the bare 3GR-FSE block and head with the IS250 ancillaries or do I need everything from the 3GR-FSE other than the IS250 intake and throttle body?
Old 02-01-17, 02:29 AM
  #83  
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Originally Posted by elbandido
Bumping an old thread, but can I use the bare 3GR-FSE block and head with the IS250 ancillaries or do I need everything from the 3GR-FSE other than the IS250 intake and throttle body?
The engines are identical so yes everything from the 2.5 will bolt right up and work on the 3.0 took me 14 hours to do the swap
Old 02-01-17, 02:31 AM
  #84  
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Excellent, I've got a mate from Lexus that's going to do it for me; I'll report back when it's complete. Mine is an auto on a 55 plate, though I doubt that will cause any issues.
Old 02-01-17, 02:47 AM
  #85  
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Originally Posted by elbandido
Excellent, I've got a mate from Lexus that's going to do it for me; I'll report back when it's complete. Mine is an auto on a 55 plate, though I doubt that will cause any issues.
You shouldn't have a problem with that , straight forward but if you can put in a stronger clutch cause mine is a brand new clutch from lexus but with the additional power it slips a little in 3rd gear with the additional power, I have a k&N drop in filter and a custom cat back exhaust eliminating the last cat
Old 02-01-17, 02:50 AM
  #86  
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I'm not looking to build the auto box, there are valve upgrades available for the GT86 version of the A960e but I've no idea about clutch packs.
Old 02-01-17, 03:44 AM
  #87  
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Where are you located in Birmingham is350uk? I'm currently just up the A38 in Burton, it would be great if I could get a ride in your 3.0 swapped IS.
Old 02-01-17, 09:10 AM
  #88  
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If my engine ever goes, this will be my replacement!
Old 03-11-17, 04:45 PM
  #89  
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would it be possible to simply swap out the 2.5 4GR-FSE block with a 3.0 3GR-FSE block and get the same horse power gains? since the engines are exactly to same except for one being 2.5 and the other 3.0, is that the reason for the horse power gains? or are the heads different? is the intake manifold bigger?
Old 03-19-17, 09:26 PM
  #90  
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3grfse supercharger
https://youtu.be/J7cnSbvSYdc


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