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Q: mk2.5 + turbo?? or swap 1.6 to 1.8

Postby andrius7 » Sun, 19 Oct 2014 8:55 +0000

ok, so, i have worm in my head for few weeks already.. thinking to get more bhp for my nbfl , but have no info what to use to go for turbo.. what ecu should i use? best turbo for lo boost? any one of you have nbfl 1.6 with turbo?
Last edited by andrius7 on Sat, 01 Nov 2014 8:23 +0000, edited 1 time in total.
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Re: Q: mk2.5 + turbo??

Postby MX5Spares » Sun, 19 Oct 2014 9:08 +0000

I am also considering same for my mk1 with mk2.5 vvt running gear and best advice so far was to get turbo from Volvo V70 T5 2.5 or similar .Info from Sideways reilly on here.Seems the turbo .s are good ,big and built in dump valve.Also the flange fitting is simple enough and apparently the inlet has nice long curved sweep in.Megasquirt seems to be ecu of choice for most people but it must have vvt facility unless you want to disconnect the vvt.RX8 injectors seem popular for mx5 conversion also.Few people doing the megasquirts but I see a lot of UK lads buying them from "Reverend", member on Nutz but I dont know him personally.I am in touch with several Nutz members so I can enquire for you if you want.Plenty of lads on here with specific information/advice .
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Re: Q: mk2.5 + turbo??

Postby andrius7 » Sun, 19 Oct 2014 9:30 +0000

vvt has only 1.8 engine's, my is 1.6 with 81kw, i don't have vvt, where is located ecu on mx5?
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Re: Q: mk2.5 + turbo??

Postby MX5Spares » Sun, 19 Oct 2014 9:53 +0000

Ah ok ,thought it was 1.8 but ecu is under passemgers feet.Just pull up front passengers carpet and ecu is bolted under steel plate there.
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Re: Q: mk2.5 + turbo?? or swap 1.6 to 1.8

Postby andrius7 » Sat, 01 Nov 2014 8:24 +0000

or anyone did swap like this for nbfl? from 1.6 to 1.8 engine?
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Re: Q: mk2.5 + turbo?? or swap 1.6 to 1.8

Postby davith501 » Sat, 01 Nov 2014 8:39 +0000

Sell 1.6..buy 1.8 car? Could that be an easier option?
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Re: Q: mk2.5 + turbo?? or swap 1.6 to 1.8

Postby andrius7 » Sat, 01 Nov 2014 10:57 +0000

hmm...not in our country :/
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Re: Q: mk2.5 + turbo?? or swap 1.6 to 1.8

Postby MX5Spares » Sun, 02 Nov 2014 8:30 +0000

I have sold a few 1.8 vvt engines for fitting to mk1 cars which is similar.I can get some onfo for you but you will need ecu and loom.The latest lad bought OMEX ecu which came with the loom to run the vvt part of the engine but not sure on other wiring etc. ecu was 600pounds sterling approx i believe (750euro )
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Re: Q: mk2.5 + turbo?? or swap 1.6 to 1.8

Postby andrius7 » Sun, 02 Nov 2014 9:31 +0000

but 99 nb has non vvt engine?
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Re: Q: mk2.5 + turbo?? or swap 1.6 to 1.8

Postby MX5Spares » Sun, 02 Nov 2014 10:11 +0000

Ah yes 99 nb has no vvt ,correct but nbfl 1.8 would have but its not neccessary to have it working .
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