Not impressed with Psychotty!

[moparguy]

I agree EMDDIESEL, you can't trust the filter minder to be accurate, but it is one referance for the relative restriction present after intake mods. It sounds like TXRam uses his the same way I do mine. Not the best, but better than a poke in the eye with a sharp stick.

 

[Vaughn MacKenzie]

Well I went for a drive yesterday, and as promised it reached 105F here in eastern Washington. Tromping on the throtte definitely brought more smoke and poorer response compared to mid-upper 90s weather.



EGTs yesterday afternoon were 650-725 cruising at 70, 5-6psi boost, running A/C at moderate levels. I went up a grade, not too steep, but required 11-13psi boost to maintain 70, and EGTs were 800-825 at this point. Once cresting the hill they dropped rapidly. My probe is preturbo. On the way home last night around 11:30 (temp cooled to 80) EGTs were not much lower than when it was 105, maybe 25F which I thought was interesting.



I don't think this is a big improvement over what I had before, but probably did cut EGTs by 50F overall. Once I have two 3" tubes plumbed to the airbox from the airdam, I'd expect a little more improvement. The airdam probably insn't the best source for air though with the heat rising up from the roadway.



Vaughn

 

['956Wheel]

Freedom of speech?

I find it sad that so many of the members cannot seem to handle the fact that all are entitled to voice their uninterupted and personal opinions. Two, at least, members have been "stomped" cause the were sure their freedom of speech would be respected so they utilized it. One member felt free to post his childish behavior and resort to posting name calling in my direction.



I hope you agree with me that if you got a gripe that is personal e-mail it to the "guilty" party rather than try to make a fool of a fellow member in a post.



Mike

 

[EMDDIESEL]

To "956Wheel" While i would never bash someone directly in a truck question thread. You are saying that you are bothered that somebody was "calling you names" in here, i did not see that, but if it was, lets not forget that you refferd to the rest of us as a bunch of people who "Brag, yap and never reveal the truth" ? You dont find that insulting to the rest of us? thats is not calling US something?

You happened to have some bad expieriences with produts like the Psychotty and therefore think WE are lying about its effectiveness? i assure you there are ALOT of people who have had great results with it, sorry you did'nt, but that does not mean WE lied.

Maybe YOU installed it wrong?, Maybe YOUR truck has something else wrong with it?.

You say your for freedom of speech and think members "are entitled to voice their uninterupted and personal opinions. " Well, YOU are allowed to, and so are the rest of us.

My point is this: Dont complain about someone calling you a name when you are going to come in here and call the rest of us a bunch of "Liars" who have nothing better to do then mislead other people into modifying there trucks. Are you for real? is that what you think we do? its a big conspiracy to sell more Psychottys?. If you cant take the heat, stay out if the kitchen.



These boards are about learning and haveing fun, i dont take any real offense to anything people say in here, niether should you. We are just a bunch of guys hanging around a "Virtual" garage.

 

[Lil' Dog]

Re: I wonder

Originally posted by Bad340fish

So exactly how effective is Ram air on a turbo motor?? If some of you have not done this do it. Go remove your intercooler hose where it hooks to the intake. Start your truck and feel the amount of air it puts out. It puts out alot... now go have somone rev the motor to about 2500. If you feel like it go get some hose and blow the driveway off. Your going to have to be flying to get a ram air affect at WOT. IMHO a ram air does no good really but to supply you with good cool fresh air, which will no doubt lower your EGTs. I think the turbo pulls enough air to cancel the ram effect.



JMO of course but that turbo pulls alot of air at unloaded RPMS. Have that sucker pulling 20-30PSI and your going to have some high winds.

True turbos provide air but, its all about compression ratio..... Higher input pressure , higher output pressure for a given turbine speed. Simple math man...

 

[drawson]

Amen EMDDIESEL, I am the guy that called '956Wheel a name suppostedly I refered to him as an expert(former drip). I got the same thing from his posts as you that all of us bombahallic are lying because of buyer remorse. I don't believe he had ever had a Psychotty in his truck. We bomber are doing reverse engineering changing things.



I deleted my first post to hopefully heal the wounds I inflected.



'956Wheel when someone calls me a liar and my other CTD bros I react. Let's put an end to this war and go out and get us some Powerjokes and Duracraps.

 

['956Wheel]

no harm here

Drawson, Lifes too short for grudges. Forget about it. Can I come back in the treehouse?



Now, I got a kick out of this one... remember the "muffler bearings" that are in "production"... I got about 8 e-mails from folks wanting to order... I am not kidding!



You are right I never had a psy on mine, however I took a peek in the stock air box and noticed a "wind" pattern of black on the foam of the stock filter, I do not like what I see and will do testing with a vacuum gauge and/or a magnehelic to see whats up... restriction?... perhaps. I am not so sure I wanna go for a wet filter as there is a LOT of dust on these dirt roads by the house. I am considering using a LARGE air compressor filter cartridge, lots of sq. in. , and fabricate a box to suit... must get the filtration specs first, microns and so on.



Expert... few are, but most have something to offer, I have 25+ years in my trade, machinist and prototype fabrication, mostly muffler bearings!



Mike

 

[JohnE]

Anyone hear of a principle called Bernoulli's Law? Basically, the faster the flow the lower the pressure. Conversely, slow the flow and raise the pressure. John pointed to a key area, the hood leading edge. What happens here in a dynamic condition (moving)? The air stream hits a brick wall and almost stops, HIGH PRESURE. The same thing happens at your mirrors, headlights, front bumper, and windshield area. The windshield base (cowl) is a good place to extract this high pressure and direct it toward an air hungry system called a heater & A/C.



An air induction system be it cowl (Psychotty), hood (Air Bulldog), or front dam (Dam Air) requires the truck moving in clean air. A side wind or traffic will screw up the induction.



Back to TxRam's findings of higher max EGT. Do you happen to remember when the temps maxed out? If it was during an acceleration (high power) run I suspect the cause may be the Psychotty, working too well! Turbo machinery has a bad habit of rewarding your hard work with hard knocks. I used to work for the same company as John. An engineer improved the design of the APU inlet ducting to ease our manufacturing problems. The new design increased flow dynamics. EGTs on the APU went UP. The easier breathing on the intake side allowed it to do more work and thus raise the EGTs. Are you following me?



Acceleration is a fun seat of the pants indicator for raw HP. Steady state towing between a gasping turbo and a force fed turbo should realize lower EGTs as you should be using less engine & fuel to realize the same. A turbocharger is not free. It requires some energy from the engine (EGTs) to spin the turbo to power the compressor. Make the turbo work less and it should lower the EGTs.



Than again, I may be all wet…. Been there done that, too. .



John

 

[TXRam]

John, Yes, being a chemical engineer and working in a chemical plant, you know I've heard of Bernoulli's Law - lots of time studying flow - in theory and in reality. Not being sarcastic, etc. , just stating my "credentials".



I HARDLY EVER TOW - that was not my goal in installing a Psychotty. Go to the Scott's site - it recommends the Psychotty for towing, BUT ALSO for, I quote, "performance enhanced trucks" (I think mine fits in here). Again, not dissing Scott - I agree that the Psychotty would out-perform a totally stock configurated air-box.



Also, the boost is not any higher - actually slightly lower (~1psi) with the Psychotty - therefore, no more work. To those of you that currently have a Psychotty, do this for me:



Pull it out of the cowl and look in that end with the filter in place. Air has to flow into the Psychotty and around the end of the 0880 to get to the filter media. I believe this area is a HUGE restriction for the Psychotty (similar to the snorkel on the stock airbox) - there's not a lot of flow AREA there around the end of the filter. I personally feel if you cut a hole in the side of it and connected it to the fender opening, it would enhance its performance. JMO.



Anyway, I've decided just to sell the Psychotty. I don't like the way it fits, and I haven't seen any improvement to suit my purpose (hot-rodding, NOT towing).

 

[24V-DSL]

TXRam.....



Don't know if you're aware that K&N makes a "high performance" version of the RE-0880 with filter media at the end instead of the rubber plug. I've got the part number written down somewhere..... Otherwise, the 0880 is the same dimensions, etc.



I run the RE and 25-0880 prefilter, and am happy. To me, having the entire filter area exposed to air flow makes more sense than having it crammed inside a plastic box. I also concede the open filter is exposed to more engine heat, but I've got a JRE heat shield that I think helps. Then, like you say, you've got the end of the filter with a plug in it... ... ?? There must be a h^ll of a lot of air pressure at the cowl to over come those other "restrictions"?? JMO

 

[John]

Originally posted by 24V-DSL

There must be a h^ll of a lot of air pressure at the cowl to over come those other "restrictions"?? JMO

Again, looking at the original wind tunnel footage Dodge used in its original second generation Ram advertising, the cowl is a relatively low pressure area... the HVAC fan drawing required air for its needs... but not being force fed. It seemed like the high pressure area (ABOVE the leading edge of the hood) was somewhere in the middle/upper area of the windshield.



For anyone who doubts the leading edge of the hood as being a high pressure area should take a drive behind an Air Bulldog induction hood... ESPECIALLY above 70 mph, the hood bulges from all the air being jamed in there (i. e. , more air than the engine and aftercooler assembly can process. . under light to moderate throttle).

 

[Coop]

HP 0880?

Once installed, I also think that the PAIS has a huge restriction due to the rubber plug at the end of the filter. Right now, I have only the cowl with the heat shield, but if you'll give me a part number for the filter with filter media at the end, I'd love to check it out. One question though. Would the filter media be tough enough to handle a major portion of the air being sucked into it through the end?

 

[EMDDIESEL]

Dont worry about the end of the filter sucking most of the air. It will balance out around the perimeter of it.

 

[Coop]

The air must still be redirected around instead of going straight throught. I'm just saying I think that if the air could go straight in, as well as from all around in the PAIS, that it would breath better. I did notice an improvement over stock, however, I do not tow. I don't have gauges, but I didn't see any difference with or without the cowl. I'm hoping that the heat shield will minimize the heating of the air in that area.

 

[24V-DSL]

K&N part number

Coop... .



The K&N part number is RX4070



I've never seen one, but am told it is exact replacement for RE-0880 except it has filter media in the end, instead of the plug.

 

[Coop]

Great, thanx. I think I'll try to find one.

 

[jsimpson]

"Duracraps"??? When are we ever going to grow up and appreciate what we've got without feeling like we've got to down what other people have got??? I'd swap my 89 for a new Duramax in a heartbeat! It's a mighty fine machine! But I'm happy with my Dodge in all its ancient glory because it does what I ask it to do. It doesn't do it near as well as a new Duramax, but it cost me over thirty thousand less, so I'm happy!

 

[JohnE]

Than again, I may be all wet…. Been there done that, too..

I'm back to the <em>obstruction</em> theory. The loss of boost is an indicator.



Maybe the K&N is a bad one? Have you tried pulling it from the snorkel and letting it breath in the free air? We use Nelson aircans & filters at work. Occasionally, we get a bad filter element.



To me the ideal air intake system would be able to draw cool air from the fender cavity on lower speed and divert to a forced induction source at higher speed. I thought Bill's (illflem) novel appraoch to fixing the stock air choke (box) a a better approach. doug's Ram Air Dam now holds my interest as a better mousetrap.



John



<SMALL>BTW

I do not have, approve, nor disapprove a Psychotty system. i just love the challenge of finding the root cause of a problem. </font>

 

[TXRam]

I have tried the K&N element by itself, and it performed the same as my modified (K&N and snorkel removed) stock airbox (i. e. , the EGT's were lower with the filter alone than with the Psychotty). And that's with no heat shield! I'll probably order JRE's heat shield and try it out.



Currently I'm running with the snorkel back in the stock box, but I cut a hole on the firewall side and connected it to the hole in the firewall. Haven't had a chance to test it at the same conditions as other tests - late afternoon w/ outside temps around 88F.



I think it is a restriction - take a 4 1/2" pipe and picture a plug 3 1/2" in diameter sitting in the center of it. That's what it looks like looking in the end of the Psychotty. Anyway, that's my theory and I'm sticking to it!



Thanks for everyones help!

 

[Lil' Dog]

Re: Than again, I may be all wet…. Been there done that, too..

Originally posted by JohnE

I'm back to the <em>obstruction</em> theory. The loss of boost is an indicator.



Maybe the K&N is a bad one? Have you tried pulling it from the snorkel and letting it breath in the free air? We use Nelson aircans & filters at work. Occasionally, we get a bad filter element.



To me the ideal air intake system would be able to draw cool air from the fender cavity on lower speed and divert to a forced induction source at higher speed. I thought Bill's (illflem) novel appraoch to fixing the stock air choke (box) a a better approach. doug's Ram Air Dam now holds my interest as a better mousetrap.



John



<SMALL>BTW

I do not have, approve, nor disapprove a Psychotty system. i just love the challenge of finding the root cause of a problem. </font>

Just 'cause the boost is lower is 1/2 the story. Has anyone out there measured the intake air temperature before and after the install??? I would bet you that the intake temperature may be lower, then the air density in the intake would be higher. Pressure comparisons without measuring temperature won't tell the whole story.



From what I can see with the Hood is that it also helps out in the intercooling which is a double whammy in getting dense air to that Cummins.



On an asside, a buddy of mine is developing electric fans just for the intercooler to help out on the hard pulls in reducing the intake air temperature / EGT's. Just improving the intercooler could help out on top of reducing the intake air temperatures.



After Scott got his new truck he had the system installed without the rubber grommet and got around 36-37#s boost on a hill with his 5'er. After the install of the grommet he could slip his clutch going up grades, approx 1-2# more boost. There is a positive pressure area in that heater area, we just have to measure it.