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View Full Version : PTP FPR mod question..


evil_2
10-25-2019, 12:00 PM
i have a 70 psi PTP FPR mod i need to install....if i install it now will i run rich without tuning the mapclamp?

punkrokdood
10-25-2019, 12:01 PM
are you running stock injectors?

punkrokdood
10-25-2019, 12:03 PM
there's a good calculator here...
/showthread.php?t=3223

punkrokdood
10-25-2019, 12:05 PM
stock injectors at 70 psi will flow 633cc/min, so you'll be ALMOST up to what stage2 injectors flow at stock fuel pressure (682cc)

evil_2
10-25-2019, 12:11 PM
so will it be ok until i install my mapclamp?

punkrokdood
10-25-2019, 12:15 PM
so will it be ok until i install my mapclamp?
you'll run pretty rich... but it shouldn't be rich enough to hurt anything...

i'd say drop it in, and turn up the boost first... with meth, you could probably get away with a 21 psi spike :thumb:

nothing against the PTP mod, its great for the money, but i'd reccommend a return line personally, but at a savings of $300 its not a bad part

evil_2
10-25-2019, 12:21 PM
my meth is being hooked up this weekend..

ill install the fpr mod and give it a try..

evil_2
10-25-2019, 12:57 PM
hmm.....should i wait til i install my mapclamp?

srtowner
10-25-2019, 03:18 PM
Yes you should wait. As punkrock said the absolute best way to go is a return line. John himself will tell you that. However the FPR mod is a great way to go on a budget.

evil_2
10-25-2019, 03:27 PM
Yes you should wait. As punkrock said the absolute best way to go is a return line. John himself will tell you that. However the FPR mod is a great way to go on a budget.

im gonna wait...

right now with a tune my goal is 300whp..i feel right now my car is roughlly 270hp...once i install my meth injection, mapclamp and have tk motorsports tune my car ill be close to 300whp. but really what im looking for is to get into the 12's on street tires...

punkrokdood
10-25-2019, 03:35 PM
im gonna wait...

right now with a tune my goal is 300whp..i feel right now my car is roughlly 270hp...once i install my meth injection, mapclamp and have tk motorsports tune my car ill be close to 300whp. but really what im looking for is to get into the 12's on street tires...
its gonna be REAL hard to get 300hp without a returnline, bigger injectors, or the PTP FPR mod. i'll venture to say that it'll be impossible, except that you MIGHT be able to feed enough extra fuel with the meth injection, but i would HIGHLY reccommend against doing that

srtowner
10-25-2019, 03:40 PM
Yeah once you install the map clamp you will be good to go. I just would not want you to be running around with all that extra fuel and no way to tune it out at WOT.

punkrokdood
10-25-2019, 03:44 PM
Yeah once you install the map clamp you will be good to go. I just would not want you to be running around with all that extra fuel and no way to tune it out at WOT.
true, its not ideal... but it probably won't harm anything... 70 psi, the stockers are still flowing slightly less than S2 injectors, so its really not going to hurt much... especially if he up's the boost to 17 psi or so

srtowner
10-25-2019, 04:11 PM
Your right it would be fine, I just like to play it safe.

evil_2
10-25-2019, 04:18 PM
with all my mods in my sig what kind of HP you think ill make on meth injection, map clamp and 18psi to redline?

punkrokdood
10-25-2019, 04:27 PM
with all my mods in my sig what kind of HP you think ill make on meth injection, map clamp and 18psi to redline?
you won't make 18 psi at redline on a bone stock turbo...

but a 21 spike/ 15 to redline NO LEAKS can easliy net 300 hp or more :thumb:

you should be able to hold around 20psi up to about 5500rpm, after that, it drops like a rock

srtowner
10-25-2019, 05:37 PM
You can hold it if you have an electronic boost controller. I was spiking 20 holding 18 to redline. Pretty much same mods minus the WI. Also I had S2 with S1 injectors. I got 289hp and 321 ftlbs.

punkrokdood
10-25-2019, 05:44 PM
You can hold it if you have an electronic boost controller. I was spiking 20 holding 18 to redline. Pretty much same mods minus the WI. Also I had S2 with S1 injectors. I got 289hp and 321 ftlbs.
i have yet to see anyone hold 18 to redline. even with the flapper shut, it doesn't hold more than 15 or 16 to redline... sure, it'll hold it to shift point, but i generally call BS on more than 15 or 16psi @ 6250 or 6500 rpm

srtowner
10-25-2019, 05:58 PM
Call what you want I know what my car did. There is a reason why I paid nearly $500 for my Apexi AVCR.

evil_2
10-25-2019, 06:27 PM
well im holding 15 psi to redline now....but im only spiking 17

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