Just curious, what is considered a safe boost level with a 49 on 93 no alky? Mods are in my sig....I can give the car some gas, give it about 12lbs no problem. Punched the car one time, seemed like 15 pounds (pulling pretty hard) and it was most certainly pinging. Time to bump the fuel pressure up? Definitely pulls WAY harder than my stocker.
Safe boost level on 93 with 49?
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what timing you run will determine the limit ,
so what timing are you running at WOT
as for punching a car with a 49 and a 3000 stall that should produce a rather quick spool .
quick spool will need more fuel the chip needs to be capable of delivering that additional fuel and the maf needs to be able to see and let the engine know its spooling and air is coming in , problem is a stock maf especially if its a reman is just too slow to adjust
a translator and new maf as well as a revised chip may be needed for the combo
ill ask what your scanmaster says but from sound of your post you dont have one
once you get one youll know when you have knock and youll know what your o2 was at the knock event
so what timing are you running at WOT
as for punching a car with a 49 and a 3000 stall that should produce a rather quick spool .
quick spool will need more fuel the chip needs to be capable of delivering that additional fuel and the maf needs to be able to see and let the engine know its spooling and air is coming in , problem is a stock maf especially if its a reman is just too slow to adjust
a translator and new maf as well as a revised chip may be needed for the combo
ill ask what your scanmaster says but from sound of your post you dont have one
once you get one youll know when you have knock and youll know what your o2 was at the knock event
turbo nasty
Turbo Dojo / MNTR
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Make sure chip is burnt for your combo..not close...for your combo. Verify proper risen rate of fuel psi, plugs are good and gapped correctly,....i.e.- the basics
IMO in the summer/hot/humid and heat soaked engine I could only get about 16 psi any more and KR would show its face in 3rd gear.
IMO in the summer/hot/humid and heat soaked engine I could only get about 16 psi any more and KR would show its face in 3rd gear.
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are you running a 49 with a chip for stock turbo ...you will need more fuel both spool and WOT
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you have a scanmaster ...try it
I will in the near future. I have a couple other small issues I would like to take care of first before I really try to tune the car. In the mean time, I will just not beat on it and drive it like a normal car 
just got the a/c working again (lines were leaking) so it is much more comfortable to drive in this heat! I saw some crazy numbers today though, in the 90 degree heat the car reached 210 in heavy traffic :0 my original fan just cannot take the punishment! Time for an alradco and dual fan setup...
just got the a/c working again (lines were leaking) so it is much more comfortable to drive in this heat! I saw some crazy numbers today though, in the 90 degree heat the car reached 210 in heavy traffic :0 my original fan just cannot take the punishment! Time for an alradco and dual fan setup...- Joined
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The normal boost not to go over is 17lbs with 93 but you need to be sure your gauge is working and you don't get any boost spiking. I have an Alradco with a stock fan and it does the trick. F body radiator if your on a budget will work.
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How much boost is safe.. answer is none when your not monitoring knock.
Scanmaster should be very first mod.. period. Learn to use scanmaster is 2nd mod. From that point on.. its all shifting priorities. Playing with boost and possible knock is bad enough.. hearing it.. ohh boy.. here comes engine #2
Scanmaster should be very first mod.. period. Learn to use scanmaster is 2nd mod. From that point on.. its all shifting priorities. Playing with boost and possible knock is bad enough.. hearing it.. ohh boy.. here comes engine #2
TurboTdr3.8
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Now you talking !
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Yep. I was able to do 20 lbs WOT in 3rd gear, but I did get some knock in overdrive. I think the PTE slic and Power plate helped. I turned it back down to 18 lbs to have some margin for error. But a few here run 20 lbs on 93 with no issues at all.
There is a difference between running 20 psi and making power and running 20 psi. As timing is the key issue. You run 16 psi at 20 degree's, or 18 psi at 16 degree's, or 20 psi at 14 degree's. As boost goes up you need to knock down timing when you dont have octane.
So whats faster?? 20 psi at 14 degree's or 16 psi at 20 degree's? Or 20 psi at 23 degree's
with a little splash of octane..This is how imports can run 24 psi boost on pump gas.. knock all the timing out of it.. I've seen setups run 8 degree's..
There is a difference between running 20 psi and making power and running 20 psi. As timing is the key issue. You run 16 psi at 20 degree's, or 18 psi at 16 degree's, or 20 psi at 14 degree's. As boost goes up you need to knock down timing when you dont have octane.
So whats faster?? 20 psi at 14 degree's or 16 psi at 20 degree's? Or 20 psi at 23 degree's
This is how imports can run 24 psi boost on pump gas.. knock all the timing out of it.. I've seen setups run 8 degree's..
It seems like most DOHC 4 bangers don't run a lot of timing. I don't think they need as much with better combustion chambers and a more centered plug. It takes a little longer to get things lit in our engines! My car feels better with more boost and less timing so that's how I run it in the Winter when I turn the alky off.
Point is when your limited on octane you get creative with the tuning.
Example running it richer affords more boost, doesn't mean it makes more power.
Typical tuning is start on low timing and adjust your air fuel to optimize power. From there add boost, add timing, adjust air fuel and watch for knock. Encounter knock then play with the variables.. Buy once you start getting knock the bulk of the power you where going to make is made already.
Seat of the pants tuning to watch a needle arbitrarily go up is just that.
Example running it richer affords more boost, doesn't mean it makes more power.
Typical tuning is start on low timing and adjust your air fuel to optimize power. From there add boost, add timing, adjust air fuel and watch for knock. Encounter knock then play with the variables.. Buy once you start getting knock the bulk of the power you where going to make is made already.
Seat of the pants tuning to watch a needle arbitrarily go up is just that.
Yes the giant intercooler is a help with the boost.
