i want to buy this for my srt so i can run 21psi spike holding 15 to redline. wonderig if this will be good for now until i get my stage2 injectrs later.
The problem with the way the PTP reg works is that it RESTRICTS the fuel return by a very FIXED amount. If there is more or less fuel being returned than anticipated, the output pressure will vary. So, again, if there's less fuel being returned, like at WOT, the fuel pressure will drop. This is exactly OPPOSITE of how you would like it to perform. You would, of course, like it to maintane an exact psi through out WOT to redline. Every other pressure regulator in the world is 100x more accurate and stable because they vary the restriction size via a spring's pressure. PTP's restriction is fixed and can NOT do this.
I began to wonder my more kids didn't complain about the presure dropping to stock at WOT to PTP but I honestly think there are only a fraction of drivers that even bother to check fuel pressure at WOT.
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Quote: Originally Posted by Bell Intercoolers
Regardless of the [Thermal] efficiency, if too much pressure is lost, then the intercooler is either useless or can actually decrease performance...Corky Bell
The problem with the way the PTP reg works is that it RESTRICTS the fuel return by a very FIXED amount. If there is more or less fuel being returned than anticipated, the output pressure will vary. So, again, if there's less fuel being returned, like at WOT, the fuel pressure will drop. This is exactly OPPOSITE of how you would like it to perform. You would, of course, like it to maintane an exact psi through out WOT to redline. Every other pressure regulator in the world is 100x more accurate and stable because they vary the restriction size via a spring's pressure. PTP's restriction is fixed and can NOT do this.
I began to wonder my more kids didn't complain about the presure dropping to stock at WOT to PTP but I honestly think there are only a fraction of drivers that even bother to check fuel pressure at WOT.
Wrong, the old design was that way. The new design shims the factory spring to hold the pressure. We no longer have fixed return back into the tank, we messed with the spring pressure. This way the pressure is more consistant and when mated up to the fuel pump rewire that we make you get near dead on pressure gains all the way to redline.
More don't complain because the design change has eliminated that problem.
Just so you know we did recall all the old ones and replaced them with the new ones. There were only 50 or so of these on the market that we either refunded or replaced free of charge.
Wrong, the old design was that way. The new design shims the factory spring to hold the pressure. We no longer have fixed return back into the tank, we messed with the spring pressure. This way the pressure is more consistant and when mated up to the fuel pump rewire that we make you get near dead on pressure gains all the way to redline.
More don't complain because the design change has eliminated that problem.
I guess drew the right conclusion but from old information. I must also have an old design then. Sorry for propogating confusion and thank you for clarifing
I guess drew the right conclusion but from old information. I must also have an old design then. Sorry for propogating confusion and thank you for clarifing
I bought a FPR mod from you last summer. I haven't installed it yet, but would like to know if I should?
It sounds as though I have the old version since I do not have instructions that show me how to shim the spring, as you described, that the new version does.
Just so you know we did recall all the old ones and replaced them with the new ones. There were only 50 or so of these on the market that we either refunded or replaced free of charge.
Mine wasn't one of those, was it? Mine is one of the first ones, already been through 2 fuel pumps.
Reguardless of the fact that I think it's a bad idea to up the pressure that high on the fuel pump, this is a bad idea altogether. What kind of supporting mods do you have? Obviously you probably don't have a stage 2 setup since you don't have S2 injectors. Which means you probably don't have the pcm, nor the map/tip sensors. That means anything over 18psi and you're going to lose power by killing timing unless you have some sort of clamp (which IMO mapclamps are just as bad as cheap fuel mods). I think this is more of a bandaid for your fuel system than anything. Just wait it out, keep your boost spiking 18 holding 15-16, and you'll most likely be faster than you would be with spiking 21. Save up and get some better fuel mods and go from there.
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O4 PT Cruiser non GT
Stock b****es, come get me
Sporting new Nikon D40 w/18-55 & 55-200...it's a learning curve that's for sure!
These guys are chickens. I ran the old PTP FPR (single hole 75psi model) with a mapclamp for two years with no problems. You just need to be careful tuning and use a wideband. I made 297whp and 348wtq 21 falling to 17 with supporting mods. I got a bigger turbo and needed more fuel, so I got a returnline and injectors. I ran the bigger turbo with the FPR for a week or so and it ran great at lower boost.
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2003 SRT-4 Silver, Stg 1, Profec II Spec B, Bwoody mm and tm, PTP WGA, ED Super Beast, AGP SRI, PTP CV, Walbro 255, AGP return line, PTP 55mm TB, AEM UEGO, NW DP w/cutout, Maddog STS, PTP stg 3 clutch, Illumina+Eibach prokit, 225/45r17s on Enkei EVO5's, BFG DR's for track, PTP SST v2, ported exmani, 3" O2 housing, DW 750s, DCR oil mod - SCT tune by AGP on E85!!!
2002 Camaro SS M6, STS T67 Turbo kit, waiting for motor now.
These guys are chickens. I ran the old PTP FPR (single hole 75psi model) with a mapclamp for two years with no problems. You just need to be careful tuning and use a wideband. I made 297whp and 348wtq 21 falling to 17 with supporting mods. I got a bigger turbo and needed more fuel, so I got a returnline and injectors. I ran the bigger turbo with the FPR for a week or so and it ran great at lower boost.
Congradulations....that makes 1 out of roughly 40 that I know of who's actually had sucess with those things. Chicken? If that's what you want to call it, then yeah you're damn right I'm chicken. I would say more along the lines of cautious would be a better word as I do not want some cheap part destroying my fuel pump prematurely effectively destroying my engine. So yeah, you're absolutely right...I'm a scared little chicken
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