russj249 2 Posted January 24, 2010 Report Share Posted January 24, 2010 Going to do a dyno day soon, and obviously can't let the vr6oc down by letting a 1.8t leon beat me on the dyno. It's meant to be 177 - 180 bhp standard.. mine pulled 180 last time i had it done.Have done a few things since then, but nothing major, anything I can do which doesn't cost a fortune to get the bhp up a few. Every bhp counts!!Obviously I'll run super unleaded with a couple of octane boosters chucked in for good measure.How much BHP would a new oil and filter free up/restore?What about engine mounts, will this effect the torque or BHP on the rollers??Should I pump my tyres up to 50psi? or let his down without him noticing! Was 180bhp standard with air filter in engine bay straight off the MAF, now it's got 6 branch manifold, air filter routed behind bumper with grill removed, new leads and plugs last week, coilovers (not sure it'll make difference on rollers but does on the road!!), new exhaust with smaller boxes, new timing chains that aren't a tooth out on the crank now!!Discuss! Link to post Share on other sites
craggsy 91 Posted January 24, 2010 Report Share Posted January 24, 2010 It will be a close call........but its gonna be the nice torque that yours will have compared to a tinny 4 pot engine. Yours will be sooooo much better torque curve Link to post Share on other sites
CALICO 130 Posted January 24, 2010 Report Share Posted January 24, 2010 tyre pressures will probably be checked at rolling road by employee, but lower would be better than higher Link to post Share on other sites
russj249 2 Posted January 24, 2010 Author Report Share Posted January 24, 2010 why lower pressures??I thought that higher would decrease resistance.. for example trying to push a car on flat ground with flat tyres is harder.. i could understand incase of wheel spin on FI's incase they spin up Link to post Share on other sites
bungy 2 Posted January 24, 2010 Report Share Posted January 24, 2010 I had a Leon Cupra and didn't think much of it. I think I had that for 3 or 4 months before moving it on Link to post Share on other sites
russj249 2 Posted January 24, 2010 Author Report Share Posted January 24, 2010 its not the cupra i don't think.. the cupra is a 2.0 if i thought. Correct me if I'm wrong. What didn't you like? Link to post Share on other sites
CALICO 130 Posted January 24, 2010 Report Share Posted January 24, 2010 why lower pressures??I thought that higher would decrease resistance.. for example trying to push a car on flat ground with flat tyres is harder.. i could understand incase of wheel spin on FI's incase they spin upThats because they grip more if you had 50psi the tyres would more than likely spin rather than grip Same as if you are doing 1/4 mile sprints you lower the pressure to create bigger footprint of tyre on the track Link to post Share on other sites
bungy 2 Posted January 24, 2010 Report Share Posted January 24, 2010 its not the cupra i don't think.. the cupra is a 2.0 if i thought. Correct me if I'm wrong. What didn't you like?Nice enough car. 1.8 20v turbo 6 speed. Just too zingy with it's power delivery and had no character. Link to post Share on other sites
russj249 2 Posted January 24, 2010 Author Report Share Posted January 24, 2010 why lower pressures??I thought that higher would decrease resistance.. for example trying to push a car on flat ground with flat tyres is harder.. i could understand incase of wheel spin on FI's incase they spin upThats because they grip more if you had 50psi the tyres would more than likely spin rather than grip Same as if you are doing 1/4 mile sprints you lower the pressure to create bigger footprint of tyre on the tracki agree with you 100%... but i just didn't think that a standard aspirated VR would spin on the rollers..Think i might stick to 30odd Link to post Share on other sites
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