Here is a cross section pic of the air tube coming from the air box to throttle body. definitely smaller inside then it looks and smaller than the throttle body.
Dyno Testing Bolt-ons On The 4.0
- Thread starter Jezza
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Here is a cross section pic of the air tube coming from the air box to throttle body. definitely smaller inside then it looks and smaller than the throttle body.
Yes, the newest video is up and it was a shock for me. I didn't expect those results. I am working on getting the footage for the next episode, which is going to be the Windstar cowl intake.
Wasn't trying to steal your thunder... Just saw it was up and figured you were busy...
Noticed someone wasn't happy with your video in the comments section.
Interesting. I too had guessed the tune would make a small but significant change because of the misfire. I’m pretty uneducated with regard to engine parameters on the road and the dyno. One thing that struck though me was the IAT seemed high. Do you think 140s (50 degrees over ambient) is typical @Jezza ? I ask because my 6.7 CTD rarely exceeds 120 and more typically is under 100. I figured boost would increase IAT vs ambient. Perhaps the vacuum intake condition of NA gas is just too different to compare to turbo diesel?
I was watching that too about his IAT and think that has something to do with not making better HP & TQ numbers but I'm no expert here. Other than seeing others improve their performance by lowering the IAT which will change how the computer is reacting to that hat air temp.
I'm still trying to figure out why his IAT's were so warm.
Think that years is in the intake, the amount of time sitting idle between pulls(intentional) with the hood closed I am thinking it's probably just heat soak. Which it will be interesting to see how the CAI effects this both during idle times and net drop on WOT.
My 05 is in the tube and with my cold air intake I can see ambient at times but after sitting at a long light on hot day there is certainly some lag time for that IAT to work its way back down.
I haven't had a chance to watch mine enough to see how it reacts at different times.
I'm just shocked it was as high as it was.
Im in the same damn boat with the shipping shit. I still haven't gotten my bond in the mail they said 7-14 business days it's been 18
No apologies needed, I was actually on a wheeling day trip with the LJ. I scheduled the video upload and then forgot about it. I saw that comment. I had a conversation with another YouTuber before I started posting videos. The negative people will always be around to do their thing. Nothing will ever be good enough for some folks. I did get a bit long winded in this one, I'm going to tighten them up a bit moving forward.
I think you did a good job on it. You're trying to explain why you are doing what you're doing ...
And yes I get stupid comments on some of my videos I've posted on FB by random people. Some just can't do anything other than be negative.
Once you do the Windstar CAI if you still have higher IAT's have you thought about wrapping the intake tubing? I've seen people do it but not sure if it helps or not.
I think so tooGive people the opportunity to comment and they will. Me as well, obviously . I try to stick to positive commentary or worthwhile questions but it takes a LOT of filtering…
So here’s a question: Do high IATs have a significant negative effect on NA engine power and if so would an intercooler help an NA engine? Since I don’t recall seeing this set up, I’m thinking not much and no?
Give people the opportunity to comment and they will. Me as well, obviously . I try to stick to positive commentary or worthwhile questions but it takes a LOT of filtering…
So here’s a question: Do high IATs have a significant negative effect on NA engine power and if so would an intercooler help an NA engine? Since I don’t recall seeing this set up, I’m thinking not much and no?
My understanding is that the computer pulls timing if you have high IAT's. It might be other things but that's what sticks in my head.
Obviously having a cooler intake air charge is a good idea. That was the whole premise of CAI kits but they didn't actually help many times.
There are some that did.
I know Jeff had high IAT's on his Hemi at first which was what lead to his doing the cowl intake on his engine for a example.
My cowl intake made big improvements in power during a typical high grade hill climb I've done numerous times, attributed to the significantly lower IATs.
A real gear head wouldn't let little details like that stop him
And about high IATs on n/a engines in general, from a conceptual angle, it certainly matters and the difference can be significant. For our Jeeps specifically though, I think it can be much more impactful because of the engine management scheme.
High IATs will lead to pre-ignition. The PCM is smart enough to see the IATs but not smart enough to have a knock sensor to more precisely pull timing to avoid pre-ignition. So instead it just guesses and errs on the safe side by pulling a ton of timing where as a more modern PCM would pull much less because it has the knock sensor to back up the tune. I think one nod towards that was when they moved the IAT sensor to the plastic tube which heat soaks less and more actually reflects the air temps entering the motor. I'll bet they changed the tune to match that fact too, but I'm just guessing.
Sorry if that was kinda convoluted. I'm still jet lagging my ass off, only got like 4 hrs last night, and it's 5am here.
Give people the opportunity to comment and they will. Me as well, obviously . I try to stick to positive commentary or worthwhile questions but it takes a LOT of filtering…
So here’s a question: Do high IATs have a significant negative effect on NA engine power and if so would an intercooler help an NA engine? Since I don’t recall seeing this set up, I’m thinking not much and no?
Well AI seems to alighn with my memory. I recall that you can get .9% increase for every 10 degree drop. Ai is giving it a full 1%. Either way with an optimistic 30 degree drop in IAT with a CAI on a 125Hp base line that would be 128.75hp with the mod.
I always thought you can see both sides of the argument that it there is gain to be realized and eh not really I notice nothing. That is not a bing swing in numbers. I enjoy the tinkering and I will chase single digit % gains because you get a few of those added together and it starts to creep into double digits
.But to your thought on intercooler is that I think is a net zero gain. If you can get ambient CAI what value does the intercooler offer other than friction loss with the additional intake plumbing. Vs a boost situation where you have a highly elevated tempature from compression that intercooler adds value.. That assumes you are using an air to air VS some sort of icebox system on the NA.
Random additional thought I have wondered if the multi hole injectors value of atomization is not the better distribution of fuel but the finer spray it is actually cooling the air too
A real gear head wouldn't let little details like that stop him
A younger me might have agreed with this... @ $18 per quart for the SWEPCO power steering fluid I'd hate to think how much I'd lose with the hoses disconnected. And trying to Fred Flintstone my porky Jeep doesn't seem entertaining either.
Well AI seems to alighn with my memory. I recall that you can get .9% increase for every 10 degree drop. Ai is giving it a full 1%. Either way with an optimistic 30 degree drop in IAT with a CAI on a 125Hp base line that would be 128.75hp with the mod.
I always thought you can see both sides of the argument that it there is gain to be realized and eh not really I notice nothing. That is not a bing swing in numbers. I enjoy the tinkering and I will chase single digit % gains because you get a few of those added together and it starts to creep into double digits
But to your thought on intercooler is that I think is a net zero gain. If you can get ambient CAI what value does the intercooler offer other than friction loss with the additional intake plumbing. Vs a boost situation where you have a highly elevated tempature from compression that intercooler adds value.. That assumes you are using an air to air VS some sort of icebox system on the NA.
Random additional thought I have wondered if the multi hole injectors value of atomization is not the better distribution of fuel but the finer spray it is actually cooling the air too
I'm with you on why leave 5 or 10 or 15 HP on the table if you can do something to add it even if you can't really feel it.
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