[Mr. 5]

I did some 60-130 runs this morning and the more I look at these results, it makes me very curious if my intake was actually better than the DCI.
Notice the times up to 100 mph.

I started in 3rd gear to keep the shifts and errors at a minimum, but when looking at the times, I guess I couldn't keep it actually error free.

I think I'll be sticking with my intake for the time being.

Sorry for the shakiness.

[BALLAJL15]

Do you ever come out to run with Warren? We should do some runs!

[hotrod182]

Originally Posted by BALLAJL15

Do you ever come out to run with Warren? We should do some runs!

Hey James, you need to get a meth kit. Race fuel performance, every day of the week!

[BALLAJL15]

Originally Posted by hotrod182

Hey James, you need to get a meth kit. Race fuel performance, every day of the week!

Yeah I know! Almost finished building the GTO. Meth kit for the 335i is next. But ms109 does well just gets expensive. We should do some runs this coming weekend Warren. Ill put in some ms109 against your meth

[hotrod182]

Originally Posted by BALLAJL15

Yeah I know! Almost finished building the GTO. Meth kit for the 335i is next. But ms109 does well just gets expensive. We should do some runs this coming weekend Warren. Ill put in some ms109 against your meth

If all goes well this next weekend, I am heading up to the drag strip.

You know when I was at the track, I ran MS109 with the meth, then tried regular 100 octane, absolutely no degradation in performance. In fact, going to 91 octane barely shows any decrease in traps. Maybe .3-.5 mph.

We need to get another CTS-V to run!

Craig, pretty damn fast runs! Have you done any 1/4 mile, 0-60,0-100 testing? I can get a faster time doing a roll like you do (thats how I did my 9.34), but for the sake of convenience, I usually just considate my 1/4 mile testing with my 0-130 on the same run.
That was on straight 91 octane + meth?

[Mr. 5]

Originally Posted by hotrod182

If all goes well this next weekend, I am heading up to the drag strip.

You know when I was at the track, I ran MS109 with the meth, then tried regular 100 octane, absolutely no degradation in performance. In fact, going to 91 octane barely shows any decrease in traps. Maybe .3-.5 mph.

We need to get another CTS-V to run!

Craig, pretty damn fast runs! Have you done any 1/4 mile, 0-60,0-100 testing? I can get a faster time doing a roll like you do (thats how I did my 9.34), but for the sake of convenience, I usually just considate my 1/4 mile testing with my 0-130 on the same run.
That was on straight 91 octane + meth?

Yah, it was 91 with meth.
I just noticed that my attachments didn't get posted so I updated the first post.

[R1000K3]

Meth will mask some of the performance differences between DCI and the CAI-system. I guess (or hope...) that the real strenght of CAI is w/o meth and in very hot climate, where the ECU detunes with DCI. Looking forward to your further findings and analyzis. Keep up the good work Mr. 5

[enrita]

I love the modding but dont think there will be any power increase with this mod. A nice open intake and high performance IC does the trick and meth is just the cherry on top of it.

[R1000K3]

I don't think it is better either, but is quite happy if it is even with DCI to keep the engine bay uncluttered. Real extra power requires other means.

[enrita]

Originally Posted by R1000K3

I don't think it is better either, but is quite happy if it is even with DCI to keep the engine bay uncluttered. Real extra power requires other means.

I totally agree and think what you guys are doing is really cool. If i had a garage would spend my time figuring out this nice issues as well. We will have lots of logging opportunities this spring and pushing the n54 to the limits. Going to be a great year!

[Malaka1]

So you were quicker with the DCI correct?

[Mr. 5]

Originally Posted by Malaka1

So you were quicker with the DCI correct?

I was, but I'm going to keep what I have so far.
I'm still intrigued with how I was faster from 60-100 with my intake but maybe it has to do with when I shifted.

[hotrod182]

Originally Posted by R1000K3

Meth will mask some of the performance differences between DCI and the CAI-system. I guess (or hope...) that the real strenght of CAI is w/o meth and in very hot climate, where the ECU detunes with DCI. Looking forward to your further findings and analyzis. Keep up the good work Mr. 5

I wonder if the same can be said about intercoolers making 10-15hp more. Maybe with meth, the difference is much smaller? I can't imagine gaining another 1.5mph or so trap on top of my 122.5mph right now with just adding an intercooler. I am thinking that perhaps less restriction may be the added benefit of a bigger intercooler if not so much for the temp reduction?

I hear a catless rear exhaust can be worth another 10hp?

[Big Tom]

The differences in time is nothing compared with the differences in distance.

The average distance between 60-130 mph was:

* With the DCI: 438,62 m
* With the Mr 5 Intake: 446,91 m

A difference in 8,29 m (almost 2 car lenghts!)

I am still voting for my homemade DCI heat shield...

[Malaka1]

I still think there are some variables to be considered...especially since you have a manual.. Maybe your shifts were slightly faster with the DCI..Or maybe the road was slightly more downhill on the DCI runs..

[hotrod182]

Originally Posted by Big Tom

The differences in time is nothing compared with the differences in distance.

The average distance between 60-130 mph was:

* With the DCI: 438,62 m
* With the Mr 5 Intake: 446,91 m

A difference in 8,29 m (almost 2 car lenghts!)

I am still voting for my homemade DCI heat shield...

I just looked up my Vbox Graph. (before the downpipe installation)
What is my 1378.69 feet reading in meters?

[jpsimon]

Originally Posted by hotrod182

I just looked up my Vbox Graph. (before the downpipe installation)
What is my 1378.69 feet reading in meters?

1378.69 feet = 420.224712 meters

[Big Tom]

Originally Posted by jpsimon

1378.69 feet = 420.224712 meters

Mr. 5 is

* 18,4 m behind Hotrod with the DCI.

* 26,7 m behind Hotrod with the Mr 5 intake.

Well done Giac?

[R1000K3]

DCI is proven to deliver power and is never wrong, especially when completed with heat shield and removal of hood sealing’s and cowl. Fast car’s use the DCI for a good reason.

I don’t give up the stock looking solution easy though. As I see it Mr.5 solution is better regarding low IAT, but is still not making more power than DCI. The difference must then be better air flow with DCI, which is easy to understand by just looking on its huge dimensions. DCI may flow a lot more than the engine will ever need, which is not the case with the current Mr. 5 solution. There are good possibilities to improve the flow though. The first thing would be to use a hose that is smoother. What may even be of greater value would be to make a smooth transition of the secondary inlet into the air box. The 90 degree entrance of air in the current solution will not help the intake of air that comes via the stock filter. A better solution would be to direct the secondary intake towards the bottom of the air box, hence working with the normal intake and not against it. It may just be to cut an oval hole in the air box instead of the round one, to be able to bend the intake stud downwards, and this should mean a lot to improve the air flow.

[midlife]

Would a third gear pull - no shift - be a more accurate way to measure the difference in intakes ?
This is the way we test jb3.

[Mr. 5]

Originally Posted by Big Tom

Mr. 5 is

* 18,4 m behind Hotrod with the DCI.

* 26,7 m behind Hotrod with the Mr 5 intake.

Well done Giac?

Hotrod's times are incredible and I don't know how he does it.
To give you an idea, Terry said that he ran a 10.3 in "street trim".
Well, I was running full weight incuding a baby seat with a full tank of gas so I think I did pretty well for my street trim.

Remember also that running the 60-130 with an auto is going to be quicker than the MT no matter how we look at it.
Hotrod was starting in 2nd where I was starting in 3rd for my testing.
I did a second gear start and ran a 10.1 but I was getting wheel spin in second.

There's more to come. I promise.

[R1000K3]

Maybe there is a simple explanation, but I can’t see it right now.
The Mr. 5 intake is much faster to 100 at one occasion than DCI, and reaches this speed 14 meters earlier.
I may be a gear selection issue in this case, but what does it really say?