What jets should I run for a 75 wet shot? (dynotune kit)

My STG2 injectors (42.5#) are maxed out bad.. And with my 40(n) / 22(f) jet combo I was knocking baddd... by 6 degrees.. Even with my timing retarded below 13 degrees...

Help me out?>

What should I be looking for?

I should be able to run a 75 on 15-16 degrees of timing according to people here on css...

Is that only on 60s? Or different jets?

Idk why I have to retard this much timing.. Any thoughts?

Plz & Thx

 

injectors wont really cause knock that bad..did you go with a colder plug?

plugs more important then injectors with knocking and n02

dude stop begin cheap..get a new fuel jet and some cooling mods..heat soak will kill your motor...knock..lean you out...dont be cheap you will blow your **** and i dont wanna see that happen

 

Ur retarded lol, take my advice, run a 26 fuel jet and forget about lol. Wet Nitrous system use their own fueling, so if it's leaning out will nitrous is on only like it is, then it's just not adding enough fuel, try a bigger jet, and it will most likely fix all ur problems, also buy me a new power inverter, so i can log ur car better since mine died lol.

I would post the logs, but forgot to save =(

 

take this advice

 

Yes, use AT LEAST a 24 or 26 jet.

 

Damnit.

Nobody mentioned 60#s?

Just a bigger fuel jet?

Piece of **** fuel jets cost 11 bucks here I wish I knew which one to use for the fuel so I don't buy another one and still run lean..

I have to check my spark plugs to see if I'm running lean or rich.. Which I'm pretty sure it's lean...

 

your pissed off bout buyin a 11 dollar fuel jet when 60's are 150 plus lol

 

easy fix, just increase your shot and it will stop the knock.

 

lol, it's for sure lean cause thats what the o2s say... lol

 

first off chris you should of came to me! haha and second you need a bigger fuel shot!

 

bigger fuel jet it is then..

So what size?

How can I just not guess it? Or be safe with the jet I decide to get?

Is it better to have an over-sized fuel jet?

 

buy ethans wideband so u can get ur tune better. and im still on the look out for 60s. if want u can tune the n20 on my car since we have the same mods

 

you need a 26 jet... but a true 75 shot is 28/42 i printed out a sheet with all the ratios

 

Hmm mabey i should re-think my set up, i am running 44n and 24f for my jets.....i should probly be running a 28f

 

Have any scans? What tune are you running?

 

Probably running lean..

Especially if you're on maxed out 42s like me..

 

What pulley are you running? i was on a 2.8 but for my injectors sake i went to a 2.9

 

I'm on a 2.9 lol and my injector duty cycle is in the 120-130% range...

DONT spray until you get more fuel..

Your injectors are probably in static (wide open lol) and you still don't have enough fuel..

 

chris buy these.
https://www.cobaltss.net/forums/parts-66/wanted-60s-harnesses-186938/

 

look at drew finding stuff for chris... drew i'm gonna go to you when i need somethin now haha

 

lol. Drew I'm gonna try out a bigger fuel jet most likely.

Reason why is that I run fine without nitrous.. So there's no reason why I shouldn't run right with nitrous (with the right amount of fuel).. So 99% sure all I need is more fuel.. And even with 60s I'll almost be what's considered to be "maxed out" at 80%... So I wouldn't be able to compensate for needed fuel with just 60s anyway..

Jason can monitor my AFR on HPT.. So idk why Ethan is calling me retarded for that haha.

We'll see what happens.. I'll most likely try a larger fuel jet soon. Maybe a 26 or 28.

 

its cause its not as accurate. then get some 79s. but u wont have a prob on a 2.9 on 60s lots of ppl run 2.7s

 

a 26 and you should be fine chris dont worry also i wanna see your set up... you wanna run a 35 shot? i have the jets

 

What are your jets for the 35? My kit came with a 16/28 for a 35 shot and since it was used on another supercharged cobalt it seemed to run a lot better than what I bought (a 40/22) for what I THOUGHT was a 75..

Since I already have the 28 jet (from the nitrous jet in the 35) I'm thinking I should try it as the fuel jet for my 75?

Can it hurt to run a little more fuel than a size 26 fuel jet to test it out?

 

pm blazzin07ss or itailanjoe or damien either of them would know