I'm probably going to get tuned within the next few weeks and was wondering if i should get them to throw on 60's while i'm there. I'm running a 2.9 pulley right now. I'm not looking to go down any more with pulley sizes so are 60's worth it??

 

your injectors are probably pretty close to being maxed, if not already, i'd do it just to be on the safe side. better safe than sorry.

 

No. If you dont wanna drop pulley sizes anymore 60's are overkill and a waste of money that could otherwise be spent on suspension etc. You will be just fine with the 42# injectors with the 2.9".

 

60's are just a little more than you need, but like i said, it's better to be on the safe side, than risk going lean. they are not a waste of money, it's a good solid mod, especially if you're getting tuned for it, plus if you want to add meth down the road or eventually decide that for whatever reason, you want to go down in pulley size, you'll already be set up for it.

 

qft.

 

thanks doc.

 

yea....42lb injectors are static anything over a 3.0 pulley....however your only a 2.9 its not incredibly terrible..then again you will kill your injectors or damage your engine over an extended amount of time depending on how much you go WOT because injectors are not designed to be run static...get the 60's and be safe...drop pulley to a 2.8 (even though you don't want to) and get tuned....you'll see a huge difference and sets you up for the long run

 

I thought w/ meth you'd actually have less need for 60's on a 2.9 then without it? I thought the meth richens it out a bit and you lean it out when you tune for meth right? If your leaning it out wouldnt that bring your idc's down? I'm not saying I'm right, I'm just saying thats what I understand from what I've learned so far. If thats not how it is feel free to educate me, lol.

 

meth does richen it up just FYI....he never said he was getting meth...but meth and the 60's are close to the same in price and if he was going to buy meth i'd tell him to get the 60's first because they would help him out more for power

 

ya my meth runs my car pretty rich so we took out a ton of fuel when the meth kicks in

 

and then when the meth kit fails, so will your engine.

fun!

dependent on altitude and general climate. a 2.9 on 42's is do-able.

but i'm always a fan of popping the 60's in and never having to change it again!

well 99% of the time you'll never run out of injector.

 

i also agree on going to the 60lbers. It is fact, that your injectors are going static during high rpm wot runs. This isn't good, so solve the problem before something breaks.

 

Im going to second that. I've had the 2.9 and 60lbers on the balt for a little over 3 months now and I've personally checked the injector duty cycle at WOT. Its nothing short of great when the idc isn't a hare above 35-40% at WOT.

 

Well if you want a set of 60's with harness I have a brand new set of semins flow match 60's with harness for 220.00 shipped.......pm me if you want them or know anyone who does!!!!

 

I just put 60's with my 2.9 pulley and the car is a lot safer. I know when I had the 42's in with the 2.9 the injectors were running well over a 100% when I was getting close to redline. I would say go with the 60's to be on the safe side and if in the future you want a smaller pulley you wont have to worry.

 

thx for the help guys. I just remember everyone saying the idcs from the 42's is running over a 100% with a smaller pulley so i figured i'd ask. What about 52's? I thought i saw someone that had them.

 

I know Im gonna get flamed for asking but which vendor carries flow matched 60's and a harness. Ive been thinking of doing thr same thing.

 

take this as law. you dont need a 60lbs injector while your running that 2.9

 

Take this as law. You dont need A 60lb injector to run a 2.9inch pulley, you need 4 of them. If you would like to keep your IDC's where they are supposed to be that is.

I can put a 2.5inch pulley on with stock injectors, is it smart? NO.
I can put a 2.9inch pulley on with 42lbers, is it smart? Not really because you are making the injectors static which is not good.
I can put a 2.7/2.8/2.9inch pulley on with 60lbers is it smart? Yes because your injectors are not becoming static.

Take that as a law.

 

no ****, im glad you pointed out the obvious that our cars need 4 injectors.... bravo, well played.

making them static... do you know what you are talking about or even what the flow rate is at a 2.9 with the stage 2 tune or with a custom tune in general off of a 2.9 with 42lbs?

 

You don't NEED 60's for a 2.9. Thats the truth no matter who tells you otherwise. It is safer but not absolutely necessary. Now, if you run your car hard, it makes sense to upgrade with bigger injectors. That choice is up to you and you alone. That is something you can take to the bank.

 

42s will be fine. people have ran a 2.8 off them. dont listen to people who have never seen the logs or have seen what their own injector flow rate percent is.

 

the 2.8 is definately on the edge....your driving style hugely dictates this

 

People running 2.8s with 42lbers would be STATIC by 6k rpms. This gets argued so much it is annoying.

People need to research what they are talking about. Get HPTuners and read a log for christ sakes. If you use a 2.9 on 42lbers you will be running over 100% before 7k rpms.

Last time I checked you don't want your injectors running over 100% maybe things have changed recently though.

I personally like to keep my injectors at 80% and under, hence why I am going to run 60lbers with my 2.8 inch pulley.

Edit: If you are going to stay out of WOT then run a 2.5 and stock injectors for all i care. But if you are going to take the car up to redline, then you should use 60lbers on a 2.9inch pulley. Is it 100% necessary no. Is it safer, yes. I really don't understand why people try and argue with logs.

 

oh my bad. cause my buddy raven ss tuned me and my rev limiter was raised to 7200 rpms... hmmmm, i wonder why i never went static all the times i wen WOT??? i ran this setup for a good 3-4 months. you base your info on what you hear, not what is factual on basis that you have actually done it