Just gotta talk about how much fun I am having with the GN

BOP4ever

Member
Joined
Jul 6, 2007
It truely is a love hate things with these cars... no in between.
I got the TE44 back on running 22-24 PSI zero Knock alky at 4.
Cool abotu 50 degrees and it is a absolute beast it is faster today at 12 psi than it was at 23 in the summer...
Dang I wish it wasn't so temperature sensitive !
Drove it to work this morning for the first time in a bout 3 months... oh what fun it was !
 
I just dug 1 of mine out for the 1st time in a couple years I'm also enjoying it. Mine isn't nearly as strong running as yours tho.
 
It truely is a love hate things with these cars... no in between.
I got the TE44 back on running 22-24 PSI zero Knock alky at 4.
Cool abotu 50 degrees and it is a absolute beast it is faster today at 12 psi than it was at 23 in the summer...
Dang I wish it wasn't so temperature sensitive !
Drove it to work this morning for the first time in a bout 3 months... oh what fun it was !

Even with the alky there's that much of a difference? I thought alky would prevent an issue like that?
 
Even with the alky there's that much of a difference? I thought alky would prevent an issue like that?
we'll i think what he means is he feels it for sure....these things do like the cold temps no doubt.
 
For each 11 deg drop in ambient, you are adding equivalet mass flow of about 1psi boost if boost is constant. This is just a guide, not the exact number as get are many other variables impacting the numbers. So a 44 deg increase in ambient would require =>+4 psi to feel as strong. . . . I think. :)
 
For each 11 deg drop in ambient, you are adding equivalet mass flow of about 1psi boost if boost is constant. This is just a guide, not the exact number as get are many other variables impacting the numbers. So a 44 deg increase in ambient would require =>+4 psi to feel as strong. . . . I think. :)
Interesting..
 
Yep - I know the feeling - Last Christmas eve, with a slight fog, I went about 30 degrees out of straight at a 55 mph roll.
Scared the hell out of me and I respect the machine.

I've also heard enough stories this time of year - that even though this is the season of joy, it can also be the season of sorrow - i.e. blown HG.
Don't get too complacent.
 
My car feels the same in the Summer with alky as it does in the Winter at the same boost. I do notice it pickup on the high pressure days at the track vs the low barometric pressure days. Humidity displaces O2 and slows it down a bit too. Sometimes not driving it much I do forget how powerful it is. Man these cars are great!
 
Drove it to work this morning for the first time in a bout 3 months... oh what fun it was ! to drive a blacked out GNnnn, HEY!!
GN's rock GN's rock ROCKET all the way, OH what fun it is to drive in a two door non chevrolet.

Merry Christmas.

RZ.
 
It truely is a love hate things with these cars... no in between.
I got the TE44 back on running 22-24 PSI zero Knock alky at 4.
Cool abotu 50 degrees and it is a absolute beast it is faster today at 12 psi than it was at 23 in the summer...
Dang I wish it wasn't so temperature sensitive !
Drove it to work this morning for the first time in a bout 3 months... oh what fun it was !

I would set that gain knob to 6 and let the controller do its thing. Especially at that boost level. There is no such thing as too much alky but there is such a thing as " Oh sh!t, I blew a headgasket........"
 
You "can" run too much alky on a cold day with a front mount such that it can't do it's job in chemistry land.
 
I would set that gain knob to 6 and let the controller do its thing. Especially at that boost level. There is no such thing as too much alky but there is such a thing as " Oh sh!t, I blew a headgasket........"

Why? If you have no knock and your car is running better than it ever has it doesn't make sense to add alky.

Taking the air temp into consideration is also part of tuning properly right?

Putting to much fuel in can have an adverse affect as well as being to lean, maybe not as catastrophic but could cause stumbling or overly rich conditions at the very least.

I would put more concern into the A/F ratio on my W/B especially with the absence of K/R.

I need very little alky on my tune to avoid K/R and usually keep mine around 3/4 at 25lbs.

I've turned it up to 8 and while I had no stumble or other detrimental effects like others have reported, I also had no gains either.

I do know that every car and combo is different and tuning will be on a individual basis for each person and their combo.

I'm still learning these 3.8's, so if I'm being misleading let me know where I'm going wrong.

RZ.
 
You "can" run too much alky on a cold day with a front mount such that it can't do it's job in chemistry land.

I know you can run too much alky because I have popped head gaskets doing it. My concern is that in BOPs case is that with TE 44 turbo at 22 psi, I would set the gain knob at 6 and let the PAC module determine what is enough alky. If he is running AF ratios of 11 to 1 with no knock, OK no problem.
 
It truely is a love hate things with these cars... no in between.
I got the TE44 back on running 22-24 PSI zero Knock alky at 4.
Cool abotu 50 degrees and it is a absolute beast it is faster today at 12 psi than it was at 23 in the summer...
Dang I wish it wasn't so temperature sensitive !
Drove it to work this morning for the first time in a bout 3 months... oh what fun it was !


And BOP if there is that much difference in performance from warm weather to cold then I would respectfully suggest that you still have some tuning to do. Atmospherics do play a part with a turbocharged car, and I can tell the difference between warm weather and cold in my car but I dont have to adjust the boost in my car at all.
 
Happy to hear your car is running good. You have to watch those cold roads and cold tires with a little more HP. As i say getting loose at 20 MPH is one thing but at 70-80 MPH is a whole different game. Happy spooling.
 
I would set that gain knob to 6 and let the controller do its thing. Especially at that boost level. There is no such thing as too much alky but there is such a thing as " Oh sh!t, I blew a headgasket........"

Setting the gain at 6 will still deliver a different amount of alky depending on where the initial and turn on points are set. The tuning starts at 6 but where you end up depends on the car and setup.

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I've had issues getting on the site so thanks for all the suggestions and stuff. I wish I understood what people mean when they say you have more tuning to do. What are the levers I need to be aware of other than fuel, boost, spark timing. The chip was burned for this combo at 23-24 psi and I am running like that. I think timing is 21-23 fwiw.
I hope get it and play some this evening.


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