C'mon guys, he admitted those forced induction cars he mentioned were poorly tuned.
He just didn't tell you they were tuned by using different sized potatoes in the exhaust pipes. :rolleyes:
Looks like a Paxton kit that was turned into a DC Performance special! Dan, will you by any chance be selling the "special" parts of that setup for the benefit of those that don't live on the west coast, particularly the intercooler and related plumbing?
Anyone know anything about the new Denso "lead resistent" O2 sensors?
http://www.densoaftermarket.com/parts_oxygen_sensors.shtml
Apparently they came out a few months ago and were supposedly tested to show 2 times more resistance than other sensors. Of course if the stockers would fail on...
The other thing you're missing is you can't make the same power with a smaller pulley and stock heads that you can with a heads/cam/blower combo at lower boost pressure. Virtually all of the cars with the Roe blower and stock heads & cam come in around 630 rwhp with the 7 or 8 lb pulley...
Vegas, I've got to assume there was a problem with the tune somewhere, as the increased risk from that setup as compared to the basic 5 psi kit seems relatively minor to me if you have enough fuel and its tuned right. We know there are several CP cars running around making mid-700 rwhp with...
I don't know about that, but I'd be very interested in some more info on what happened. Did you have cast pistons? Were you running 7 psi with the ported heads or running the 7lb pulley (which should have resulted in around 5 psi with ported heads)? What kind of fuel system upgrades did you...
18" Kumho V700's are in very limited supply. I think JonB and/or TireRack just got a few more in last week, so you may want to call one of them tomorrow.
Ron is correct--I was referring to peak cylinder pressure at TDC, and Len is talking about cylinder compression without the engine running--two very different measures. Excellent points too; about as far as you can go without defining a lot of unknown variables.
You're confusing the pressure of the intake air with the pressure in the cylinder at combustion, which are two very different things. The intake air charge may be 5-7 psi, but cylinder pressure is measured in hundreds of psi. I think many cars these days have cylinder pressures of around 1,000...
I'm no expert, buy my recollection is that a Miller cycle cam reduces the effective displacement and compression ratio of an engine by around 20% by leaving the intake valves open during the first part of the compression stroke. I think they have to be used with a blower so the piston will have...
Actually you might be surprised--but I'm not going there. Hehehe. I was just having fun with you bro. But I think MichaelP has it right--it's time for your cutting cycle. :)
Heating issues?? Are you talking about the couple of people who overheated their cats? Boy that was a real problem.
And your kit wasn't DIY if Archer installed it and tuned it. You have exhaust mods, which Paxton has specifically said are unsuited for a DIY install of their kit. And if you...
C'mon Scott, I know you've come up with something for this--carbon fiber hub covers perhaps?? :) BTW, I would have bought the Purners if they were available in 18's.
Re: 19
I think Pilots are still about the only option for the rear. There is a Pirelli that is supposedly available (355/25/19 if memory serves), but it's more expensive than the Pilot (345/30/19) and doesn't seem to be much if any better as far as wear, traction, etc. JonB can give you the...
Yes, it could, but now you're outside the context of a DIY system. Sean has all kinds of programs available for his blower on different cars, but something for a Paxton or TT system would have to be developed from scratch.
I recall noticing a post or two in the past complaining about HRE wheels sticking to the hub and being difficult to remove, which I couldn't relate to because my 19" 545R's always came off easily. Well, I replaced them with the same wheel in 18" (to run drag radials), and after spending 45...
If you're going the DIY route, Roe is the clear choice. Even Paxton says its kit isn't designed for anything other than a completely stock car (and as noted above and in other threads, some buyers would debate even that), so even your basic mods are likely to be a problem with the Paxton kit...
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