gforce477

Well today I started to install the intense kit. I got the stock pulley off and put on the new 2.8, however I was running out of daylight and am going to finish it tommorow. I was wondering though what would be the effects of running the 2.8 up to 6500 rpm without the MAF translator or any tuning (stock). I am obviously not going to do this and I know the kit comes with the injectors and MAF translator for a reason, but would the car run very lean or would the computer have enough air/fuel mapping tables to compensate? I know with the 3.0 pulley you don't need tuning. I just wanted to know how the stock computer would react or if anyone has tried to dyno a 2.8 pulley stock and what the A/F's were. Thanks for any brillant insights to my brillant question lol.

Thanks, Dom

silverSS

Never tried it, and never will, make sure you have some kind of tuning...or unless your just doing temporary for like 1 day until you get it all setup, and dont take it past like 3k..

Nocturn

you run the risk of running lean and detonating and causing some nasty engine damage...so I wouldn't try it.

Cobalt_Supercharged

I don't think the injectors are big enough for that much air.

gforce477

Well the New Revitup Motorsport kit uses the stock injectors, at I believe around 90 percent duty cycle with a 2.8 pulley. So the stock injectors can work with the 2.8, but that kit has a piggy back computer, I am interested to know what the stock computer would do.

06black

i am very interisted in how that would work....hmmmm

3fo893013L

crazy bastard go to bed.. god heh

eh, without larger injectors and access to PCM it would not be advised..

Blue04RedLine

There were a good amount of people that ran the 2.8" pully before psi-fi or rev it up or intense came out with any of their kits. I know two people alone down in south florida running 2.8 as of right now without management, and they're running fine. You will run lean, but it's not DANGEROUSLY lean. So doing it for a couple days if you have to isn't gonna hurt anything. Of course I'm saying this only experiencing it with 93 octane, not 91. If you can get 93, you shoud be fine. If you can only get 91, take it a little easier because you are going to be prone to more knock, but it won't be bad at all if you take it easy. Its not like if you drive the car it's gonna blow up or something with just the pully, you'll be fine till you can finish the install.

06black

damit sneak leave me alone!!!!

you go to bed punk!!!!

i pm you back

06black

i can run sunaco 94 if i have to but normaly she gets BP 91.....will the car run ok with just the pully????

Jmc007

You run a 2005 or 2006 ?

gforce477

A 2004 Saturn Ion Redline, shhhh, don't tell anyone Im in here, our forums are not that great.

memphisr24

If you need to drive somewhere, technically you could without flooring the gas pedal and not going above like 4000 rpm. As long as you hit stock boost levels (12.5) I would think you'd be ok. However I wouldn't even go above 0 with just thepulley on it and over 3000 rpm bc I just would not risk it. Just install the other stuff and then go and beat on it. While you're at it, take some video of you doing some runs.

Brian MP5T

Fuel Cut and a Lean Condition..


Here is a "Lean Condition"

memphisr24

Ouch.

Blue04RedLine

It's really not that bad to just run the pully. You guys are making it seem like the car can barely be driven with the 2.8" pully alone and it wil blow up if driven hard. The worst that should happen is you will run a little lean up top, above 5700RPM and such. If you drive it normal, no worries. If you get into the higher RPM's, you might experience up to 2 degrees of knock, but the ECU will compensate for that and pull the appropriate timing. You're fine until you can get the thing finished, so don't worry.

dirtySSout

It shouldn't lean it out that much that you'll blow your engine, we already are running rich as is. Although, I would suggest not boosting it all the way to 17psi till you get some added fuel upgrades.

06black

well i want to run a 2.7 or 2.8pully but i'd realy like to waite till the stage 1 come out the injecters and such....i just wanna know if i'll hurt the car with just the pully..i get on her once in a while but not all the dam time....keep me posted on what ya'll think

1MEANSS

k im telling you this because i have done it.....i have the zzp 2.8 pulley with no tuning at all....all i have is 1 step colder plugs gapped to 0.30.....now this setup will be fine for awhile as i have drove on it hard for a month and no probs ...i even did a compression check the other day and it was fine....after a month....now..with 2.8 and no tuning with 93oct gas you will get up too 6 degrees of knock retard....that is the most i have seen was 6...it stays around 5.2 5.5 degrees most of the time after 5krpms....now here is the funny part....so just to be safe and i have the modular pulley so i can change it in like 5min. i put the 3.0 on just till i got the computer tuning or injectors....and i still get 4 degrees of knock after 5krpms....WITH 1 step colder plugs... all these peps running 3.0 pulley get knock most of the time and they dont know it..and i have not heard of a blown eng yet so it its not going to hurt you for a few days or a.....i beat the crap out of my car. there is not 1 day that im not spinning the tires all over the place....so dont worry you are not going to hurt anything with just that for a day ...now im not saying beat the crap out of you car and hit the fuel cut and all that..because i know that would hurt the rings...and you would prob crack a ring land or somthing..so try not to hit fuel cut at all with the pulley.....shift 500 rpms soon just to be safe.....well thats my 2 cents

AlphaJaguar5

regap your plugs at .045

I have AEM SRS, 2.9 BilletFlow Pulley with NGK BKR7E gapped at .045 and I get no knock when I'm racing

06black

whats and AEM SRS???
and do you just have the pully?

AlphaJaguar5

ALL I HAVE (performance wise) is:

AEM Short Ram Intake
NGK BKR7E gapped at .045
Billetflow 2.9 Pulley

06black

thats most excelent to hear...thanks for the insite!

AlphaJaguar5

???? what ????

I cant tell if you being sarcastic or what? lol

1MEANSS

ill try that i dont know if that will take off 4 degrees of knock but i hope so.....what is the temp where you live?? it is about 60 degrees here right now... i only run 93oct too but still getting knock for some reason