i just got my header installed yesterday and was finally able to hook up my wideband. at idle its anywheres from 14.3-14.8:1 is that what its supposed to be at?

also when im at say 100km/h (60mph) and i floor it it goes to 10.0:1. is that bad? im just starting to understand this wideband stuff. i am running the gm flash, stock pully.

any help would greatly be appreciated




M62 KIT for sale PM ME

seems a little rich at idle but wot its not bad a lil on rich side i think some peopl like it in that range



8 psi with m62 and IAT under 100

Your idle afr seems normal for the most part. Should be at 14.6-14.7 with the reflash, at least mine was. With the stock pulley, 10:1 is also right. GM's reflash runs rich under WOT which is also normal for reliability reasons.

Save your money. It might be worth something someday.

ok great thanks. i knew that the flash ran rich but in reading different threads i never saw an actual number for what it was with stock everything.




M62 KIT for sale PM ME

I don't drive an eco Aaron but for mine I am in the 14.-15.2 range at idle. As for WOT on my stock tune with meth I was 12.7. So I figure without the meth I would have been into the 13's. Do you have your meth kit hooked up yet? There is some power to be made with your setup with just leaning it out a bit. I bet you'll see some big tq number increases on the dyno when it is properly tuned. You still hoping to have everything running for the sport compact? I want to go but I gotta work. May have to settle for the last weekend in Aug. Anyways, hope u can get her running good for Miramichi.

i wont have my meth on by this weekend. im still waiting for my injectors to come. my friend was gonna sell me the 4 spare that he had but he ended up seeling them to another person without telling me. come up to miramichi for the noonan nationals. its a lot of fun there. you get to run against old muscle cars haha, where the only chance you stand is in the bracket or hope they red light haha




M62 KIT for sale PM ME

Guys, it bounces around at idle. It should be targeting 14.6, so the numbers will fluctuate between mid 13s and mid 15s usually. At cruising, the O2 sensor works quicker, and the AFR should stick pretty tightly in the 14s.

At wide open, most people target the 11s or very low 12s, it all depends on where you find the sweet spot. 10s are real rich. It might spike that way for a second, but for the most part it's probably in the 11s or 12s I'm assuming?


2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero

if im cruising yes im in the 14's but when im almost WOT and at WOT its at 10.0 flat..




M62 KIT for sale PM ME

too rich


2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero

this is still the gm flash




M62 KIT for sale PM ME

GM makes the reflash rich so you don't blow your motor up. I was puffing black smoke with my built sunfire and the reflash only before getting it tuned.

yeah im puffing a little bit of black smoke as well. hopefully soon she will all be tuned and ready to go




M62 KIT for sale PM ME

JM Graphics / Need Decals? wrote:GM makes the reflash rich so you don't blow your motor up. I was puffing black smoke with my built sunfire and the reflash only before getting it tuned.

LOL, not on the LD9 GM Supercharger reflash. They target 13.0 under PE, and I saw upwards of 14.3:1 during wide open with just a 62mm throttle body and 2.6" pulley.


2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero

wow i didn't know the gm flash ran that rish... haha welcome to my world aaron, my car is at 10af flat from the second my rpms go past 1! who is gonna tune it for ya luke or danny? u will notice a big difference when you lean it out a bit! i bet your pumped! are your injectors the last ting you have to get b4 you can get the meth up and goin?

neither of them are tuning it. a buddy of mine in sj is. yeah the injectors and my heat exchanger pump




M62 KIT for sale PM ME

total blackout wrote:neither of them are tuning it. a buddy of mine in sj is. yeah the injectors and my heat exchanger pump

Is there a place to get cars tuned in SJ? Is there a dyno there? Or is he just gonna tune on the street?

14.7 is considered the optimum/stoich point when running on the closed map... and for NA application 12.8-13.1 is optimum on open map or WOT... now on a boosted app the optimum range for afr's is 11.5-12.0... if you are running too rich(10.0:1) you are losing LOADS of power... 12.0 will yield maximum power on a boosted app but tends to run hotter and is on the brink of failure... so stick with a 11.8 and you will be fine...


...I am the BEST at what I do...
"I guess your right[BlueBoost]. Me and my slow car are failers."

[ion wrote: C2]

JM Graphics / Need Decals? wrote:GM makes the reflash rich so you don't blow your motor up. I was puffing black smoke with my built sunfire and the reflash only before getting it tuned.

LOL, not on the LD9 GM Supercharger reflash. They target 13.0 under PE, and I saw upwards of 14.3:1 during wide open with just a 62mm throttle body and 2.6" pulley.

Yes it did, i had a fully built setup i think i would know. lol

idle looks normal. WOT is normal for the gm reflash, super rich.

after i got HPT and tuned the car, i aim for 12.1-12.3, which is hit most of the time, if its warmer it will go into the mid to low 11s.

when i was on the dyno it was very hot.. it was in a guys pull barn, and the neighbors complained about noise so he had to close the door which is why it was so hot.. i was sweating from just standing there for a minute.. i couldnt monitor my IATs because the dyno computer plugged into the OBDII port, but when i was done i looked at them and they were above 150 before i pulled it off the dyno..

4th gear pull was pegged at 11.4 and when i sprayed it went down to 10.1. on the street in 4th its usually 11.9 and with spray around 11.0. not sure why it dropped more than a full point but i lost some power there, so you are definitely losing power at 10:1 afr..


anyway, lol, 10.0 is super rich and is what the gm reflash puts you at. save up for HPT, its a good investment



12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]

thanks evilmokitar. yeah my buddy has hpt and will be tuning it for me. he has tuned a few cobalts and sunfires. yeah i hate the gm flash for the running rich problem.




M62 KIT for sale PM ME

JM Graphics / Need Decals? wrote:

[ion wrote: C2]

JM Graphics / Need Decals? wrote:GM makes the reflash rich so you don't blow your motor up. I was puffing black smoke with my built sunfire and the reflash only before getting it tuned.

LOL, not on the LD9 GM Supercharger reflash. They target 13.0 under PE, and I saw upwards of 14.3:1 during wide open with just a 62mm throttle body and 2.6" pulley.

Yes it did, i had a fully built setup i think i would know. lol

Yes it did? It did what? Supposedy ran 13.9 with a stock rebuild and stock pulley on the supercharger, with an auto. Right. Maybe you got a different tune from GM somehow, but every LD9 with the stock GM Supercharger Calibration I've looked at has targeted a relatively lean AFR (13.0). You can look at it right in the tune... and see it on your wideband readout. I saw 13s and low 14s sometimes at WOT with minor modifications (smaller pulley, bigger throttle body).


2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero

[ion wrote: C2]

JM Graphics / Need Decals? wrote:

[ion wrote: C2]

JM Graphics / Need Decals? wrote:GM makes the reflash rich so you don't blow your motor up. I was puffing black smoke with my built sunfire and the reflash only before getting it tuned.

LOL, not on the LD9 GM Supercharger reflash. They target 13.0 under PE, and I saw upwards of 14.3:1 during wide open with just a 62mm throttle body and 2.6" pulley.

Yes it did, i had a fully built setup i think i would know. lol

Yes it did? It did what? Supposedy ran 13.9 with a stock rebuild and stock pulley on the supercharger, with an auto. Right. Maybe you got a different tune from GM somehow, but every LD9 with the stock GM Supercharger Calibration I've looked at has targeted a relatively lean AFR (13.0). You can look at it right in the tune... and see it on your wideband readout. I saw 13s and low 14s sometimes at WOT with minor modifications (smaller pulley, bigger throttle body).

Why do you always bust my balls because i went high 13's and you couldn't get out of the high 14's with your s/c setup? I didn't mention anything about my 1/4 mile times. The car was still slow, 13.9 isn't anything to be honest.

I ran something like 14.4 with the reflash, got a slight tune and went 13.90.

And yes it did meant, yes the car did puff a little black smoke under WOT with the gm reflash, why would i lie about it? Read the post from you i quoted, that tells you what i was referring to.

I don't see how i could have gotten a different tune since all should have been the exact same straight from GM. GM isn't going to offer a s/c kit with a reflash and lean you out. They make them rich so they are quote unquote "safe", when you start adding mods that throws the tune off obviously and changes the afr




Edited 2 time(s). Last edited Friday, August 21, 2009 4:26 PM

I was hoping you'd reply.

Because you have zero proof. It's highly unlikely that your stock MP45 setup and a tune could net you 13s. People with twice the mods don't even touch that. Where's the video? It bothers me. I am skeptical. It doesn't matter to you though, you know you ran it and that's fine. I just have difficulty believing it.

But anyways okay so when you hit wide open, the air-fuel ratio spikes to rich real quick. A puff of smoke at the beginning is nothing. That doesn't mean the whole RPM range is rich. What were your AFRs during WOT?


2001 Olds Alero (LD9)
650 whp / 543 ft-lb
@turboalero

[ion wrote: C2]I was hoping you'd reply.

Because you have zero proof. It's highly unlikely that your stock MP45 setup and a tune could net you 13s. People with twice the mods don't even touch that. Where's the video? It bothers me. I am skeptical. It doesn't matter to you though, you know you ran it and that's fine. I just have difficulty believing it.

But anyways okay so when you hit wide open, the air-fuel ratio spikes to rich real quick. A puff of smoke at the beginning is nothing. That doesn't mean the whole RPM range is rich. What were your AFRs during WOT?

The only proof if you want to get down to it is a time slip from the track that night in my old room at my Dads house. If you really want to get down to that i can get a photo but it wouldn't be soon since i don't live there anymore. I guess i just pulled all the 60', mph all the specs out my ass to post up and lie

To be honest, i didn't have a wideband in the car when i first put the kit on and did the reflash so i can't tell you the AFR exactly but the car was running rich. At one point under WOT there was nothing but black smoke pouring out the exhaust.

I could care less, don't doubt what i did from something you couldn't achieve yourself. You running 14.8's or whatever with the s/c setup is just plain ridiculous, you should have been at least in the mid 14's. With the gm s/c stock pulley, intake, exhaust and a bored throttle body i went 14.7 back when i first got my charger kit on.

My car had a fully built and ported head on it which helped air flow greatly when the car boosted. I believe this was a huge factor in running what i did. For the record, a few posts up you said i had a stock rebuild. The rebuild was far from stock, look at my profile.

The car has been sold but since the 13.90 @ 103.5 i ported the charger, added meth injection with m5 nozzle and a 2.5" pulley. No doubt it had a 13.5 in it with a set of good tires. Basically just worry about yourself because you seem to be the type who takes a few mod lists and 1/4 mile times and whatever most people ran that's what you believe everyone runs, that is the furthest thing from the truth on all cars with the m45 setup.





Edited 6 time(s). Last edited Saturday, August 22, 2009 12:42 AM

Oh the j-body love

A 13.9 out of a mp45 would be amazing to me. My best to date is a 14.5 at 92.5 (or something close to that). I don't have a built engine yet but have a large majority of bolt-ons for my car and I am no where near 100mph, mind you the track I am racing at this year is slow as hell cause its uphill . I am hoping to get to a better track the last weekend in august if the weather is nice so maybe that will put me in the low 14's. I do somehow have a slip from last year with just the s/c and a header I ran a 14.2 which doesn't make any sense to me cause I am still not even running close to that this year, maybe the timing got messed up or something. Anyways, I've been reading this post for the last few days and thought I would participate in the conversation It does appear that most mp45 setups tend to be in the mid 14 range (give or take a little). And another thing I find interesting about your time is that you had almost a 2.2 60ft which meant with a 2.0 60ft you could have ran even faster (I'm getting 2.0 60fts).