Garryg 5 Report post Posted October 11, 2012 Before I go any further, I don't have the option of changing the car...(not for another 12 Months). Anyway, I get itchy feet at least twice a year and usually just change cars. This time I can't. So to keep me happy I want to make some mods to the car.....in a $4-5k budget. So what would you do? Ideally I'd like a quicker responce to the throttle and a bit more HP. My thoughs are (but not knowing the cost)... 1. Supercharger / turbo? 2. Exhaust? 3. V8 Transplant? Wouldn't be able to do any of them myself unfortunately, so need to factor this in the cost. Quote Share this post Link to post Share on other sites
BM WORLD 1283 Report post Posted October 11, 2012 (edited) super charger kits are about $4000-5000usd would be the only upgrade that will give you any real decent power upgrades. http://store.vacmotorsports.com/vf-enginee...530i-p2627.aspx manual conversion with a light flywheel might be a good option. some headers and a remap otherwise swap the engine block for a m54b30 3L 530i 330i engine etc v8 transplant requires complete front end , steering , suspension , front crossmember ,engine ,gearbox , diff , axles etc etc Edited October 11, 2012 by Brent HARTGE535i Quote Share this post Link to post Share on other sites
westy 614 Report post Posted October 12, 2012 Tinea Cream? Quote Share this post Link to post Share on other sites
Tristan 338 Report post Posted October 12, 2012 http://www.turnermotorsport.com/p-1878-spr...r-2001-bmw.aspx I looked into this for my 530 but decided for the money I could do better. If I had that money and could do a manual conversion for the $$ I would.. But the 525 I drove definitely wasn't the fastest car out there so I don't know I it would be worth it on a 525z your decision I Spose I can't imagine any immense gains from an exhaust... I'd go see gavin@hi velocity if I were you Quote Share this post Link to post Share on other sites
smiddy 76 Report post Posted October 12, 2012 I have some long headers, about 12hp. Quote Share this post Link to post Share on other sites
Neal 544 Report post Posted October 12, 2012 If your factoring labour then a trade for a 530 / 540 would probably work out cheaper for performance options. Having done a turbo build It gets very expensive quite quickly. The 2.5 is a relatively high compression engine to start with which will limit boost without spending a fortune. I'd enjoy the car for what it is and perhaps do the bushes / shocks to make the car feel fresh again. The e39 Motorsport is a nice drive regardless of engine power. Quote Share this post Link to post Share on other sites
Garryg 5 Report post Posted October 12, 2012 I have commited a sin this afternoon....BMW gone and replaced with a 350GT Skyline.. I apologise sincerely to all Bimmersporters!! Will keep my eye in anyway as no doubt I will end up with another one sometime...just a bit bigger. Cheers Quote Share this post Link to post Share on other sites
