Jeddy 0 Report post Posted January 10, 2008 I remember reading something on here about advancing your timing. I've got a 87 e30(Jetronic) and i understand it is possible to do so in these. Does anyone know how much it can be advanced and what sort of difference can be expected. Cheers Quote Share this post Link to post Share on other sites
Andrew 30 Report post Posted January 10, 2008 If i recall we added about 25 deg more advance before it started pinking (on 98) Better throttle response - bit more power. Worth doing really. Quote Share this post Link to post Share on other sites
CamB 48 Report post Posted January 10, 2008 If i recall we added about 25 deg more advance before it started pinking (on 98) Better throttle response - bit more power. Worth doing really. 25 deg? That doesn't sound right at all... Quote Share this post Link to post Share on other sites
Andrew 30 Report post Posted January 10, 2008 25 deg? That doesn't sound right at all... I possibly recalled wrong! Quote Share this post Link to post Share on other sites
ducatiss 1 Report post Posted January 10, 2008 (edited) IMO if it doesn't pink and its running fine don't mess with it. Yes you can do it on the jetronic but coming from myself who has played around a little with the timing you wont really see a lot of gain at all running std pump octane petrols. If you insist on having a go, then increase it in small increments until it starts to pink on load (acceleration) then back it off until it doesnt. Take care that it is not pinking at higher speeds where wind and road noise will often mask it. Mark the point where you started as well so you have a reference point. If you have a timing light so much the better. Edited January 10, 2008 by ducatiss Quote Share this post Link to post Share on other sites
mr E34 11 Report post Posted January 10, 2008 If i recall we added about 25 deg more advance before it started pinking (on 98) Better throttle response - bit more power. Worth doing really. I think from memory my stock M30 accepted 6-7 deg advance(top end rpm) running BP 98. We bolted on a knock sensor to monitor, anyway thats what we did. Quote Share this post Link to post Share on other sites
mr E34 11 Report post Posted January 10, 2008 I think from memory my stock M30 accepted 6-7 deg advance(top end rpm) running BP 98. We bolted on a knock sensor to monitor, anyway thats what we did. Here is Alpina Aust with their real world dyno results. People, you will be astounded at how little some older( & newer) cars are putting down to the rear wheels! http://www.alpinaaustralia.com.au/dyno/dyno_main.htm Quote Share this post Link to post Share on other sites
kiwi535 538 Report post Posted January 11, 2008 basically thats how chips work....advancing the timing can be a recipe for disaster..I would use Mr E34 methods!!! Quote Share this post Link to post Share on other sites
Jeddy 0 Report post Posted January 11, 2008 basically thats how chips work....advancing the timing can be a recipe for disaster..I would use Mr E34 methods!!! Yea but i don't think you can get chips for a jetronic ecu Quote Share this post Link to post Share on other sites
