scribbles

Started new thread, sorry I am getting ready to install my Paxton and you are the only one with much experience with a supercharger local. What is your estimated HP, what do you have to data log? Are you using the nbo2 or wbo2? What kind of boost are you seeing at the TB, any idea how much boost you are losing because if the intercoolers, do you know what the cfm of the procharger you are ruining is punting out.

Sorry don't mean to drill you but I am just trying to see were you are at. With good heads, exhaust, and the charger, you should be at least 400 or so hp, and round 450-500tq.

I think you are losing a lot of hp with that cam the lobe separation is only 112, and I think you are loosing part of your intake charge out the exhaust.
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I don't think you have enough injector also. But dataloging should help solve that mystery, you should be almost double stock hp, I think you should be closer to a 30-32lb injector. But the fmu changes things a lot.

scribbles

Also with a tight lobe separation, fuel would be mixing with the exhaust charge, and throwing off the af-ratio to the O2 sensor. I think that cam is screwing with you. How do the plugs look after a wot pull.

OUTATIME GTA

iTrader: (2)

I'll try to answer the best I can about my own experiences, but for your own knowledge, you'll receive much more thorough information from the Power Adder board about your Paxton application.

TraviZ and Terrell (kairles) are also familiar with the ProCharger way of doing things, but all of us are using different head units, fuel systems, tuning (or lack thereof in some instances)

Keep in mind as I've said many a time, my GTA has never been a stellar example of high-power output. Any issues I may, or may not have are not directly related to the supercharger.
When I had just the heads/cam I was only showing an approx 250rwhp. So, let's say with just a 20% drive train loss, 300hp. Not that impressive to start. I would estimate now, with mph's of 108-109 that I'm around 315rwhp = ~375 flywheel.

I've datalogged with TunerProRT on my own and my tuner friend uses an old school app called Diacom with a WBO2 in the tailpipe.
I do not know the boost at the TB, nor the cfm. Gauge reads 8-10psi, not sure how accurate this is at this point. Obviously the P1SC is capable of 30psi/1200cfm, but my car is not, hah.

Injector wise, I should be closer to 26 at this point, but datalogging shows with the FMU I'm still good. Ideal would of course be to go much higher injector, tune then ditch the FMU.

As for cam, yes it appears I'd need to find something that will minimize overlap and a wider duration on exhaust than the intake, 113-114 lsa.

Hope that helps.

- Del

scribbles

It does thanks, if you ever want to go cruzing and datalog let me know, i am right around the block.

porkyzilla

iTrader: (1)

we can data log no problem,

i have my prominator we can borrow to tune it than once we got it running good you can have a chip burnt with that bin.


my laptop serial port for some reason doesnt work any more cant figure out why.


but hit me up

OUTATIME GTA

iTrader: (2)

Thanks fellas - However, I just had it tuned recently after the new AS&M runners/MSD distributor and there were no majorly visible issues, other than my IAC not functioning properly.
My AFR, BLMs, knocks and pings are as on point as they can get and the car seemingly runs strong. I didn't barely needed to make any changes.

Who knows, maybe I may have a gremlin, whether electrical, or block related that has been there for years since I've owned it.
I should maybe look into a compression/leak down test in the near future, unless anyone else has some bright ideas other than cam switching that I'm aware of.

Cali Z

Del,

Seeing your car running at the track, it looks like it performs well to me... what kind of numbers do you think your car should be putting up?

OUTATIME GTA

iTrader: (2)

That's hard to say really, everyone has an opinion I'm sure.
Based on my mph, I guess I have the power with some slicks to obtain ~12.5.

I've seen (350) guys with headers, exhaust and stall run high 13's, moderate heads/cam (rarely TPI) run mid-high 12's.
Figure with a blower, drop another .5-1+ second depending on boost.

Some history:

1. Couldn't get past 14.1 with headers/exhaust/intake mods.
2. The #'s with heads/cam weren't much better, 13.6-13.7.
3. After Supercharger, 12.9 best.

So technically, I'm not far from where I could be, considering all those #'s could've been .2-.3 better with slicks, I've kept most of the factory options and all the aftermarket parts CA legal.

What do you think?

Oops, edited wrong post, sorry! heh.

Cali Z

Well, I think its hard to say as you said. I think that your build is somewhat unique in that when others do setups like yours they tend to go all out and not go with 50 state legal parts. I'm sure you will find more people running large cams, big heads, and high boost than you will see people running mild forms of the same setup. I think that your mph shows respectful gains over what it was when it was relatively stock and still retains all of the comfort as when it was stock, which is not always easy to do. I'm willing to bet on the street your car would probably jump out on my pretty good with all that torque your tpi produces so you'd definetly have me worried if you challenged me haha.

I think you'll be mid 12s before your done with that setup.

OUTATIME GTA

iTrader: (2)

Thanks buddy, we'll see.

I'm always up for a race.