edwardm Posted January 5, 2011 Share Posted January 5, 2011 Right guys,Mods are now as follows:1. Cold air/long arm induction kit (opened it up considerably and no problems with bumper muck as of yet).2. Decat with cat back system including centre box and back box (again, opened it up even more, pleased with the sound too).3. Removed TB coolant feed (marmite mod, probably doesn't affect it, but can stay as it is for the time being).These mods were followed by a good service including fuel filter, air filter (clean), oil filter, oil change and spark plugs. I also changed the gearbox oil as my syncro's are completely dead. An ECU reset also seemed to help bring VTEC and IAB back slightly.My question is, in terms of N/A power and performance, what mods can i do now? I have the Y21 gearbox waiting to go on and i will team it with a lightweight flywheel. I have considered HT leads, exhaust manifold etc although a lot of people seem to say don't mess with these as the standard items are good enough. I haven't really considered inlet manifold and throttle body though, what is available in terms of inlets/TB's?I have various braces ready to fit also, as well as purchasing the koni kit at the end of the month (although i know these aren't performance mods).Thanks Link to comment Share on other sites More sharing options...
SteveMB6 Posted January 5, 2011 Share Posted January 5, 2011 I would put the airbox back on, use a k&n and take keep the resonator off. B18's loose a bit of power with open induction kits Link to comment Share on other sites More sharing options...
johngreen537 Posted January 5, 2011 Share Posted January 5, 2011 TBH mate, once you've got the Y21 on, it's gonna be like adding 20% more power anyway!Wait and see the difference before splashing out more cash! Link to comment Share on other sites More sharing options...
ryan.. Posted January 5, 2011 Share Posted January 5, 2011 you need a re-map. any change to the air/fule system or exhaust etc needs the ecu to be mapped to the changes Link to comment Share on other sites More sharing options...
edwardm Posted January 5, 2011 Author Share Posted January 5, 2011 So it's gotta be a socketed P30 ECU then? Any respectable well known national outfits that can do this?Also, as for the standard airbox, i didn't feel a lot of difference either way tbh, no major gains or losses. I'm sure it doesn't help low down, but once you're running i think it probs helps a little having an open filter. Link to comment Share on other sites More sharing options...
scottravenhill Posted January 8, 2011 Share Posted January 8, 2011 Alright ed will have to meet up again. maybe we can compare performance on our cars to see if any difference as I'm always thinkin mine is sluggish No I don't mean race just go for a drive in Each ha Link to comment Share on other sites More sharing options...
civicturbo79 Posted January 8, 2011 Share Posted January 8, 2011 N/a engine builds cost big money and the best you will ever get is around 250 bhp . you could go on to:1. A type r head ( that way you have all the type r cams valves and retainers needed to rev higher and better vtec ,single stage and you get over the inlet manifold problem ).2. Forged high comp pistons 3.All new bearings and gaskets , seal 4.s80 gearbox is a must . 5 , Also a must ecu and remap All this things will cost alot of money but if i had to pick one i would go for the s80 gearbox , 1 second off you 0-60 time . Rich. Link to comment Share on other sites More sharing options...
johngreen537 Posted January 8, 2011 Share Posted January 8, 2011 I think about it this way. The lower ratios give the equivalent of 23% extra torque to the wheels. Putting that into N/A power, you'd have to add 50 ponies and 30lb ft of torque to get the same effect.One costs £500, one costs £3000 Then, after the box is changed, every time you add any extra poines, you'll actually be getting 23% more effect Link to comment Share on other sites More sharing options...
cal Posted January 15, 2011 Share Posted January 15, 2011 skimming the head is a cheaper way of bumping compression and power. Link to comment Share on other sites More sharing options...
ryan.. Posted January 15, 2011 Share Posted January 15, 2011 how do you work that out john?The engine had 122 ft lb of torque no matter what gear box is in it. All the new box does is make it FEEL like its got more buy having a closer ratio Link to comment Share on other sites More sharing options...
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