GolfGTIforum.co.uk
Model specific boards => Golf mk4 => Topic started by: shaft69 on 06 May 2012, 11:59
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Been offered k04-001 gen Borg warner for decent price, at mo stage2 APR map. If for k04-001 Apr say only req 4bar fpr and k04 APR map upgrade which is only £60. But since I'm also running meth inj may req larger inj too. What thoughts on it if ko3s inj deliver enough fuel, have some Saab yellow at work.
http://www.goapr.com/products/tvk04.html
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I would suggest you stay away from a 4bar fpr unless you upgrade the fuel pump, it puts a lot of strain on the fuel pump. You are in my opinion much better off getting larger injectors. Cost of a 4bar for and new fuel pump is more than injectors.
Saab red tops are ideal for this turbo, 346cc at 3 bar is easily enough for 270bhp which is more than this can kick out.
With regards the mapping, do you really want a k04 map on a non k04 turbo? It has a completely different compressor and is no way really comparable to the k04. Admittedly £60 is a good price but I can only imagine all they are doing is sticking a k04 map on your car , that's not really tuning it! And the suggestion of a 4 bar fpr is because they've done it before and hence have a map for stock injectors and 4bar.
I appreciate you want to stick with apr as you've got a stage 2 from them but really you need a custom map tuned for your setup and not something which has just been put together on someone's car and being flashed onto yours.
£60 map from apr or custom remap from the likes of r-tech which is going to be better?!
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iv got Saab reds in mine, but thats on a ko4-022!
uprated fuel pump, and only a 3bar reg! wasnt no need for a 4 bar!
to get the maxmuim out of a map u need corect size pipework!
3" tip = inlet 3" exhaust = outlet! and 2.5" intercooler pipework would be best!
ur best off going for custom mapping not a case of "£60 for a flash and go"
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Think i'll keep to ko3s and max that out got most stuff here in garage alloy 3" maf housing, 255 fuel pump, saab yellows. May be changing meth to nos later in year got wizard nos kit too.
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forging your engine? :huh:
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Running meth wouldnt mean bigger injectors. It allows you to run more ignition timing with the same fuelling.
NItrous is a touchy/fine subject running daily. From what I read, you need to pull back ignition when using nitrous.
I wouldnt want to push the brains out of a k03s on a unforged engine. I had the torque maxxed out on mine. 25psi peak by accident (dodgy gauge) and it was pushing 298lbft torque which is far too much for a stock bottom end.
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Running meth wouldnt mean bigger injectors. It allows you to run more ignition timing with the same fuelling.
NItrous is a touchy/fine subject running daily. From what I read, you need to pull back ignition when using nitrous.
I wouldnt want to push the brains out of a k03s on a unforged engine. I had the torque maxxed out on mine. 25psi peak by accident (dodgy gauge) and it was pushing 298lbft torque which is far too much for a stock bottom
end.
That's true about meth, mates got nos on his awesome runs 75bhp nozzles. Races everyone who'll race, ran it for good 3yrs now and gets proper hammering.