So am am thinking about getting a larger TB for my 2000 LD9 with the m45...I know it is 52mm stock and can handle a bore up to 58mm...I found in a post that the opening of the m45 s/c is just under 60mm...I was looking at the MRZ 60mm TB but am not sure how much more power I want to add to my LD9...I had the engine rebuilt about 42,000kms ago (with more or less stock parts or a little better than stock)...I am going to be installing the 2.7" pulley soon, along with the header and crank and alternator pulley...I am not sure how much HP I am going to be at (hoping to get it dynoed when all the parts are on, but I'm not sure where I can get it done) and don't really want to push it too hard...I am not looking for a lot more power just want to make everything I have work a little better...I am looking into alky injection (cooling mist) to help out with the temp of the s/c(maybe this fall)...so if I did get a 60mm TB do you think my car would handle all my mods decently...I read a guy saw an extra PSI with his 62mm TB...right now on my stock 2.8" s/c pulley I am seeing 5.5psi and sometimes 6psi at redline...not sure what the 2.7" pulley will give me, maybe 7psi?...so my other worry is that I may be getting to the max psi I really want to run in my car with just the pulley alone...what are your ideas or opinions about adding a larger TB and alky injection on my car with the mods I have on a relatively stock motor...I am still running the GM reflash if anyone is wondering...any suggestions would be great.
Did I not reply to your other post in the Boost forum? Why cross-post and ignore someone's legitimate reply?
2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero
I saw it but you were the first and only to reply...wasn't having much luck in the boost section, so I thought I would see if I could get any help from here...still wondering regarding if it would be something I should really do with stock internals on the mods I already have...I was doing some searching today and found out that my injectors really only handle between 240 and 248 hp...thinking I may have to do more fuel upgrades to handle more power...I know the TB will help out but don't want to damage my engine...wondering if I should get my 52mm TB bored to 58mm...still a little under the size of the s/c opening but still better than stock.
