Testing Legmaker intake on stock and modified Hellcats

[Octanewide]

That is the only intake temp I have

If your talking about this gauge I believe it is post or after blower temp.

 

[vortecd]

That would make sense by what I'm seeing. Needs to be one before it goes in. Sounds like if you data log you can read it

 

[Grape Ape]

I need some instruction on how to set up what I want to see in my logs...

 

[Speedy!]

I can help.

 

[Grape Ape]

I can help.

Thanks @Speedy!

Do you have it on your YouTube channel or would we just need to go through it? I posted a couple of my logs in the thread that @jonx96 posted about comparing tunes. If you have a chance look at them and let me know what else to look at and how to load it in. I'm just learning this side of things.

 

[Speedy!]

Those logs looked fine to me. I'd go in and add a couple PIDs like ambient air temp and Aircharge other than that just some personal preference type stuff. I like to see what gear the car is in, what mode (sport track etc).

I have a vid on it under the tuning play list. Check that out and if you still have questions lemme know. It's easy to setup. Best practice is to key the car on to run but don't start it, connect HPT, and then click the little "add" gear icon and go to town.

 

[jonx96]

I haven’t been to a laptop to look yet. But just so you know air charge will not log in vcm scanner beta. I have a ticket open with up tuners on this.

 

[Grape Ape]

Those logs looked fine to me. I'd go in and add a couple PIDs like ambient air temp and Aircharge other than that just some personal preference type stuff. I like to see what gear the car is in, what mode (sport track etc).

I have a vid on it under the tuning play list. Check that out and if you still have questions lemme know. It's easy to setup. Best practice is to key the car on to run but don't start it, connect HPT, and then click the little "add" gear icon and go to town.

Thanks @Speedy! You da man!

 

[Octanewide]

That would make sense by what I'm seeing. Needs to be one before it goes in. Sounds like if you data log you can read it

Here is some good info..

 

[YMMV]

@YMMV
Tell me more about that insulation on the outside of the afe intake box? Any pictures?

Pics in this thread.

(33) What did you do to your Hellcat today? | Page 83 | SRT Hellcat Forum

 

[2017 Redline HC]

Thanks for the effort. It’s a CAI I was considering. I’ve checked clearances like that with a couple blobs of modeling clay or blue tack.

I don’t think it fits tight to the hood. I tried with a different tape and none grabbed onto the hood when down. It does look to be very close. I dont have any clay to try what you’re suggesting. If I see the Grandkids I’ll see if I can get some.

 

[Mean Cat]

I'm thinking at most would see a tenth 1 mph. Wouldn't be surprised if I see nothing. Now Jon makes 17 # of boost so way more air needs so maybe he will see something. I said before Racer X and B Mason both run the stock air box so we will see

I also run the stock air box, with 2.85, on 93+, up to my level I think the stock air box w/ K&N drop in filter is the best for IAT's b4 a pass when idling. Even if a open filter is boxed off in some way it's still getting hot air wash with the hood closed & is taking in hotter air.
I do like the louder whine from open filter, I had the AFe one with engine bay block off panel but still had higher IAT's at the start of a pass.
With higher boost, the bigger tube & TB prob. makes a bigger difference.

 

[Speedy!]

It looks like the AFE is a shield that's open at the bottom? The JLT is a complete box. No idea if it matters. I data log every single run at the track so I can provide good info on the JLT to compare.

 

[Mean Cat]

It looks like the AFE is a shield that's open at the bottom? The JLT is a complete box. No idea if it matters. I data log every single run at the track so I can provide good info on the JLT to compare.

Yes it's (AFe) open at the bottom like the stock box open at the bottom to the lower bottom panel area, but the AFe has a lot of areas around the shield to take in heat, when sitting still & idling. When moving it's not that bad on IAT's. I'm speaking in racing terms.
I had the JLT also & the one I had can let hot air in around the top area where the tube sits on the box, I think the new ones have a piece of foam that goes on it now so maybe better there but mine did not seal to the hood either like it's suppose to, a good 1" to 1.5" all the way around the top. So I went back to stock air box.
With a chiller & idling, then a burnout, then line up, I want the IAT's & ICT's to be as low as possible at the launch, then it gets better after that.
IMHO I think the stock air box to a certain point (hp level) is the best to do that.

Looking forward to your data logs to see results.

 

[Mean Cat]

I don’t think it fits tight to the hood. I tried with a different tape and none grabbed onto the hood when down. It does look to be very close. I dont have any clay to try what you’re suggesting. If I see the Grandkids I’ll see if I can get some.

The way I check to see if a CAI fits to the hood & seals, take the hood vent off the hood, put a light inside the engine bay to see better in that area, close the hood, use your phone to video, stick your hand with phone in the vent hole to video 360*, you can also just stick your hand in the open vent hole to feel all the way around the top of the CAI box or shield of witch ever CAI that you have.
My AFe sealed better to the hood than the JLT (1 > 1.5" gap) but the AFe has more open areas around the shield than the JLT box.

 

[Speedy!]

Here's kinda that problem I thought we'd see. These data are all from the same day using the JLT. If there's this much deviation using the same intake would be difficult to compare different ones. This is temp data only, but as mentioned before looking at aircharge at WOT, say at the top of 4th (6200 rpm?) would tell us if more air was getting pulled in.

Beginning is just before launch and end is just before chopping the throttle at the 1/4 mile stripe. LTR is the SC coolant temp the rest should be obvious.

beginning amb 61 iat 84 mat 122 act 109 ltr 82 end amb 66 iat 68 mat 142 act 134 ltr 86

beginning amb 63 iat 84 mat 126 act 113 ltr 91 end amb 68 iat 70 mat 145 act 138 ltr 90

beginning amb 63 iat 77 mat 113 act 97 ltr 79 end amb 63 iat 68 mat 136 act 129 ltr 81

beginning amb 63 iat 73 mat 127 act 118 ltr 91 end amb 64 iat 70 mat 142 act 134 ltr 86

 

[vortecd]

With higher boost, the bigger tube & TB prob. makes a bigger difference.

We only got the one pass with the stock air box but Jon was still faster with the stock airbox and he has a 2.85 pulley. I see 10# of boost he sees 17#. I was .08 faster he was .07 faster. Higher boost didn't make a difference

 

[Mean Cat]

We only got the one pass with the stock air box but Jon was still faster with the stock airbox and he has a 2.85 pulley. I see 10# of boost he sees 17#. I was .08 faster he was .07 faster. Higher boost didn't make a difference

So your faster with the stock box, is what I would think or defiantly not any worse over others. I do like the loud whine from the open filters, it's addicting.
Was thinking with higher boost, at some point it would need more air. With Jon's car, that 17# is pretty high for a 2.85, but either way good news

 

[Speedy!]

I don't think you can use ET as the metric to measure such a small difference. My last outing at the track I had over 1/10 difference in ET with no real changes to the car. MPH is probably a better metric, but even that won't tell much unless the difference is > 2MPH. Anything else becomes just an anomaly IMO.

My times were
Run 1 9.704 @ 140.77
Run 2 9.845 @ 140.24
Run 3 9.796 @ 140.63
Run 4 9.768 @ 140.27

I do know going from a 93 octane tune to a race fuel 109 tune in my car I pick up 3-4mph and the difference in the tunes is about 5-6 deg of timing which I guess would be 60 - 70hp ?

 

[Mean Cat]

I don't think you can use ET as the metric to measure such a small difference. My last outing at the track I had over 1/10 difference in ET with no real changes to the car. MPH is probably a better metric, but even that won't tell much unless the difference is > 2MPH. Anything else becomes just an anomaly IMO.

My times were
Run 1 9.704 @ 140.77
Run 2 9.845 @ 140.24
Run 3 9.796 @ 140.63
Run 4 9.768 @ 140.27

I do know going from a 93 octane tune to a race fuel 109 tune in my car I pick up 3-4mph and the difference in the tunes is about 5-6 deg of timing which I guess would be 60 - 70hp ?

Yeah with small differences, things can get washed out with variances.