Suspension, Tires, or both?

[Sam88gta1]

Well thats my concern now, I set it up to run at 3 bar since according to the injector calculators I shouldn't even be close to 80% duty cycle until ~850fw, with 12lbs I highly doubt I'm at that point, if I am actually at 80% then I'll up the fuel to 4bar and change my injector data. So back to the question, does it seem reasonable I'd see this kind of dc at with my combo?

DC is based off of airflow and load. Sometimes it's correct and other times is not. No real way of knowing unless you can not add enough fuel to correct a lean condition.. It's nice to have it lower than 80% but sometimes it's not possible. I've seen cars tuned @140% dc and run perfectly fine. I didn't do it that way but I have whitnessed it.

You are better off running higher base fp in my experience due to you being at 80% with only 12 lbs of boost.

[dville_gt]

DC is based off of airflow and load. Sometimes it's correct and other times is not. No real way of knowing unless you can not add enough fuel to correct a lean condition.. It's nice to have it lower than 80% but sometimes it's not possible. I've seen cars tuned @140% dc and run perfectly fine. I didn't do it that way but I have whitnessed it.

You are better off running higher base fp in my experience due to you being at 80% with only 12 lbs of boost.

Thank you for that explanation!

[71chevellejohn]

For sure I'd like pics, the guy who owned THR forwarded me a bunch of photos throughout the build, but I'd like as many as possible.

Hell, if Metzger sent you the pics - they could have been from half a dozen different cars! LOL

Can you post it? I have some photos of it at FFW, but it has a for sale sign, we're you selling it or THR? He made it sound like he built the roller, you wrecked that day and bought this roller, didn't sound like you had it built. Of course from what I've read he is a total lier, but the "for sale" sign at FFW threw me off.

The signs that were on the car were just advertising what they can do. Silver347 had been having a car built by THR, but the way that shop was operated it was ridiculous. Basically the silver/orange car taken in exchange for a bunch of money that was paid for a different car to be built. It was at FFW as an advertisement and for him to give a thumbs up and accept it - or wait for the other car to get finished. Since the whole process had been dragged out over a few years, he opted to take the silver/orange car. And even then lost a ton of money on parts that were never delivered.

[shumpertdavid]

dville, on the tire there should be a DOT # it will be a series of letters and numbers usually. The last #'s will designate how old they are, ex 2906 would mean they were manufactured the 29th week of 2006

[turbostang]

I feel I need to clarify my statement -

I think it would be fine at a lower pressure providing your pump is keeping the injectors full at that pressure. Since you don't appear to be logging pressure, I'd do what Sam said and turn up the pressure.

We've ran elevated pressures for seasons at a time and never had a problem, don't worry about that pump - that's what its designed for.

Your tune will likely suffer down low, and you'll have to revisit those affected cells, but not a big deal. I'd rather do that then put pistons in it.

Wait.. What pump is on this thing?

Edit - I'm also with Sam, the 80% won't hurt a thing, and is merely a guideline. 20% is a BIG safe margin of error before the injectors go static.

[dville_gt]

Not logging FP, but do have a gauge in view and have never seen a drop, I observe ~1:1 boost reference. The pump is a Aeromotive Eliminator (-12 in/-10 out)

I feel I need to clarify my statement -

I think it would be fine at a lower pressure providing your pump is keeping the injectors full at that pressure. Since you don't appear to be logging pressure, I'd do what Sam said and turn up the pressure.

We've ran elevated pressures for seasons at a time and never had a problem, don't worry about that pump - that's what its designed for.

Your tune will likely suffer down low, and you'll have to revisit those affected cells, but not a big deal. I'd rather do that then put pistons in it.

Wait.. What pump is on this thing?

Edit - I'm also with Sam, the 80% won't hurt a thing, and is merely a guideline. 20% is a BIG safe margin of error before the injectors go static.

[turbostang]

Not logging FP, but do have a gauge in view and have never seen a drop, I observe ~1:1 boost reference. The pump is a Aeromotive Eliminator (-12 in/-10 out)

It's one of those things - if you see it happen, it's too late.

it's also one of those things you'd likely have to be hauling some serious ass to see the effects of dropping fuel pressure... aka, a longer period of WOT.

[dville_gt]

You know where to find a 0-100psi 0-1volt fuel pressure sender.

[turbostang]

You know where to find a 0-100psi 0-1volt fuel pressure sender.

Not in 0-1V.

I'd look around for 'pressure transducer' on ebay etc. There's bound to be one out there somewhere.