Technical => Engine Tech => Topic started by: 1WLD BRD on November 15, 2007, 07:14:17 PM
Title: dumb ass question..
Post by: 1WLD BRD on November 15, 2007, 07:14:17 PM
Which I already know the answer to, but I am bored and want to see what you guys think....
I am installing the Cobra intake on the cougar this weekend, :shakeass: and was wondering if I should add an adjustable Fuel Pressure Regulator. I already plan to do it down the road, but to save a bit of coin, :hick: (with christmas around the corner and all....) I am going to run it with the stock FPR..... Shouldn't have any issues right? :burnout: I will test the FP and install the Air/fuel gauge, before I get on it hard to make sure it isn't leaning out too much.
Title: dumb ass question..
Post by: 5.0willgo on November 15, 2007, 07:28:08 PM
I've been running the stock fpr and I've got a Cobra intake and then some ;)
Title: dumb ass question..
Post by: Punisher on November 15, 2007, 07:51:00 PM
I got my aeromotive one off ebay for like, $60.
AND its like a $200 reg.
Ebay FTW!
Title: dumb ass question..
Post by: dominator on November 15, 2007, 07:53:48 PM
It will be fine ron.
Title: dumb ass question..
Post by: Cougar5.0 on November 15, 2007, 08:17:23 PM
WoW!
That is a dumb-ass question!
lol - just kidding of course, AFPR can help for WOT AFR adjustment, but should NOT be required if your air meter is properly calibrated.
Title: dumb ass question..
Post by: thunderjet302 on November 15, 2007, 09:49:34 PM
Pffff I'm running my combo on stock HO injectors with no problem. I'm even throwing on the GT40 intake without bumping fuel pressure. The stock HO injectors will handle 285-290 fwhp before a pressure increase is needed.
BTW you're putting the intake on a HO right? It won't make much of a difference on a SO ;)
Title: dumb ass question..
Post by: 1WLD BRD on November 15, 2007, 10:24:01 PM
Quote from: thunderjet302;187924
BTW you're putting the intake on a HO right? It won't make much of a difference on a SO ;)
nope it will go on a SO for now, mainly for looks. And it is speed density. And I know it wont do much on the SO, Like I said though, right now I just want the nice shiny looks, as I am sick of my py looking stock intake... thanks guys.
Title: dumb ass question..
Post by: Cougar5.0 on November 15, 2007, 10:30:00 PM
mmmmm, shiny! :hick:
Title: dumb ass question..
Post by: Innes on November 16, 2007, 05:30:43 AM
Here’s some of my advice for your cougar intake on your cobra. Trying to save money w/a FPR I read this some where that if you tap down on it w/a socket and a hammer (denting it) you bump up the pressure just remember a little at a time cause there’s no revering it and have a back-up if it all goes wrong. I know it sound dumb but it’s up to you I read it some where and always wondered. So you wanna be my ginnie pig
Title: dumb ass question..
Post by: 1WLD BRD on November 16, 2007, 07:22:15 AM
Quote from: Innes;188019
So you wanna be my ginnie pig
hahah no! LOL. as it is if the speed density doesn't like it, it will force my hand and I will have to throw the HO in it that is sitting on my shop floor.....
Title: dumb ass question..
Post by: dominator on November 16, 2007, 07:30:04 AM
Don't be tapping down on anything!!! If you do that you'll ruin the diaphram. If you simply unplug it you'll gain about 10psi all the time,not just at wot but on a fairly stock so it's not necessary.
Title: dumb ass question..
Post by: V8Demon on November 16, 2007, 08:03:41 AM
Quote from: Dominator
If you simply unplug it you'll gain about 10psi all the time,not just at wot but on a fairly stock so it's not necessary.
I wouldn't do that. Here's why:
Quote
This modification has exactly the opposite of the desired effect: It increases the effective idle fuel pressure without raising the fuel pressure at WOT. At best, the EEC-IV will eventually compensate for this blunder under closed-loop operation, but will never notice it at WOT. At worst, the EEC will adjust the mixture at *all* vacuum levels to correspond with the observed fuel delivery during part-throttle, high-vacuum operation, resulting in a leanout at WOT.
That's from here: http://www.sb.net/wkeller/mustangs-faq/part-1.html
You don't NEED the regulator yet. You can wait on it.
Title: dumb ass question..
Post by: Cougar5.0 on November 16, 2007, 09:46:15 AM
Quote from: V8Demon;188032
I wouldn't do that. Here's why:
That's from here: http://www.sb.net/wkeller/mustangs-faq/part-1.html
You don't NEED the regulator yet. You can wait on it.
Exactly - no back-yard mechanic tricks here - do it the right way!
Title: dumb ass question..
Post by: thunderjet302 on November 16, 2007, 10:08:17 AM
Quote from: 1WLD BRD;188024
hahah no! LOL. as it is if the speed density doesn't like it, it will force my hand and I will have to throw the HO in it that is sitting on my shop floor.....
I'm running a HO SD car with a cam in it no prob. You will be FINE ;)
Title: dumb ass question..
Post by: dominator on November 16, 2007, 03:06:24 PM
Yea that's what i was getting at,no need to puncture it as it will be fine anyways. Was just stating that if someone had this dumb idea,rather than mess up the regulator just unplug it. Also the fuel pressure at wot is not raised per say unless it's under boost pressure. The regulator sees vaccum and sets the pressure 10psi lower than when at wot(no vaccum)so disconnecting the vac source would richen it up down low but it would stay the same at wot.
Title: dumb ass question..
Post by: Drewstang on November 16, 2007, 09:37:32 PM
Its a bit easier to install when the rails are not on the car, but if you have a good set of allen wrenches you'll be okay.
Title: dumb ass question..
Post by: 1WLD BRD on November 17, 2007, 03:39:28 AM
Quote from: Drewstang;188149
Its a bit easier to install when the rails are not on the car, but if you have a good set of allen wrenches you'll be okay.
yeah I have changed them before, but thanks.
I have also found it to be easier even just lossening the rail to give you some play makes it easier too. and yeah I aint no red neck mechanic, everything gets done right on my car, you should no that by now Chris ;)
Title: dumb ass question..
Post by: Innes on November 17, 2007, 07:12:40 AM
“yeah I aint no red neck mechanic” I feel that’s directed to me last time I ask you to be my guinnie pig and tell you my good ideas.
Title: dumb ass question..
Post by: dominator on November 17, 2007, 07:55:46 AM
I know ya do things right ron but you are from dunville and all LOL.
Title: dumb ass question..
Post by: 1WLD BRD on November 17, 2007, 10:55:00 AM
god it, now you are starting with the dunnville (proper spelling of it, :p) jokes. LOL
I got a buddy at work that like to bug me about it too. I may be from dunnville, but my cobra intake is shinier, LOL.
relax Innes, I didnt say that to insult or point out you, just lately there have been some real boneheaded ideas around this board about fixing stuff and modifiing stuff, that I wouldn't do to a field beater, let alone my daily driver/show car. I take this car to a huge car show every week in the summer, so I am not going to be doing ANY jerry riigging of ANYTHING. Factory looking advise, and mods is the only way to do something.
Title: dumb ass question..
Post by: 32VFoxBird on November 17, 2007, 11:07:56 AM
Quote from: 1WLD BRD;188235
god it, now you are starting with the dunnville (proper spelling of it, :p) jokes. LOL
I got a buddy at work that like to bug me about it too. I may be from dunnville, but my cobra intake is shinier, LOL.
relax Innes, I didnt say that to insult or point out you, just lately there have been some real boneheaded ideas around this board about fixing stuff and modifiing stuff, that I wouldn't do to a field beater, let alone my daily driver/show car. I take this car to a huge car show every week in the summer, so I am not going to be doing ANY jerry riigging of ANYTHING. Factory looking advise, and mods is the only way to do something.