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i have the full cs cbe and cs inlet and pt internals my car is so fuckin lean it not funny i wouldn't recommend it without a tune, ive been babying if for a year now, should have my ecu back from cpe / sand back this week...=) cs said i be ok with what i did, but i would see hi kr, also they said once i went to an inter cooler absolutely have to tune!! good luck man can a moderator please move this post down sorry op don't know what went wrong???? |
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Uhhh...wow... |
corksport DP and no tune......???? so i just bought a used corksport DP and will be installing it soon..... maybe. unless i wait till i get money for a manifold. i don't plan to do any tuning since i rarely drive the car to its limits. i mostly just cruise around in the car and maybe get into a race once a month or so. right now i have an ets tmic, turbosmart 50/50 BOV, aem cai converted to short ram, hks exhaust and a race pipe, SU RMM, and a good monitoring system. with current mods my A/F is very safe and i get no knock whatsoever. will the CS down pipe really change things that much or should i still be ok with no tune? |
i would upgrade your fuel pump internals just to be on the safe side. |
dp installed and no tune = http://www.legaljuice.com/exploding%...hicle%20on.jpg j/k, in all seriousness though, getting a tune would be a safe choice. Especially on our cars with their fucking neurotic ECUs. once you open up that downpipe, you release a lot of restriction on the system. |
well i can monitor the fuel pressure for now to see how it reacts... so far they are doing fine with the mods i have. i can't see a DP making a drop in fuel pressure? but stranger things can happen and do with this car! besides i'm not a tuner and the closest one i trust is in georgia, but if i see that it is causing any problems i guess i'll have to buy an AP and drive to GA. man why does this car have to sux balls when it comes to modding? i love the car, but iit really is becoming a pain in the ass. who has good FP internals out right now? |
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I've seen tuned cars with less than 10-15k miles with motor blown problems...:dot: |
in ur case i would be safe and get the fp internals. just monitor it, you may get away with it may not. Mods are in sig and my stocker is holdin up ok. But def will need to get internals next b/c i plan on gettin a fmic after that |
as with everything that goes with modding....your mileage may vary. everyone's car is different. I just wanted an excuse to use that sweet pic oh, and dixie, yes, an aftermarket DP can cause your fuel pressure to drop. When you release the restriction on the turbo, it can flow better. Better flow means it can push more air. More air means the engine will need more fuel. Eventually, the engine can demand so much fuel that the fuel pump cannot keep up and fuel pressure begins to drop. |
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what is the min. pressure before really needing internals? i'm getting spikes of 1700 psi and lowest at full constant throttle is around 1550 psi. |
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Mazda says, about 1600 at 60% load or greater. Just change them out, you'll feel better for doing it. A DP alone will probably be ok. it's when you add the inevitable race pipe that problems start to occur. |
just went out for a bit and did a few hard runs..... FP never went below 1680psi and floated around 1680-1760. i'd say its ok for now. i'll keep a close eye on everything though when i put the DP on. i hope the butt dyno can feel the difference good?!?!?! where should my AFR's be when i put it on? whats the "safe" area? |
i just got a cobb dp installed today and was told to get a fuel pump asap... |
why with the cobb? its still catted? i'd think that the difference between that and stock wouldn't be so much that you would need a new FP? anyone here running the CS down pipe and test pipe without a new FP or internals? how are things holding up for ya'll? |
Re: corksport DP and no tune......???? Quote:
Best price and great product! |
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just because the fuel pressure is up, doesn't mean its lacking in volume. I ran a stock cdfp with a downpipe w/ a highflow cat for like a month. When I would go WOT, it would do a slight pause before it took off. Did the fuel pump, and that hesitation vanished. Adding the FP internals gave such a boost in the mid range, that that reason alone is worth the upgrade. I really think it should be the next mod after an intake. The install is definitely a lot easier than a downpipe... |
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If you value your car and all of the money you've sunk into it. At the very least install a bigger pump or internals and yes, tune. You may get away with running the stock tune being fully bolted but all it takes is one lean-condition to bill murray one of those rods. On the plus side, we'll have another FS thread.... |
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