For those who have DINAN goodies
 

Question since I am having a hard time finding out the answers. I've also received different answers.

Will a DINAN Cold Air Intake system work interchangeably on a 4.6iS and 4.8iS? In pictures I see no difference, but I've been told by a former employee at DINAN that they would not work??

I tried comparing part numbers but couldn't even find the part number for 4.8iS DINAN system. I have a possible lead on a CAI that I may want to purchase for my 4.8iS and I want to be sure it'll work.

D760-0530
D760-0534

D-176-32 is the number on the carb sticker of my 4.8is CAI. Doubt that helps you any... but that's the only info on the unit I saw without taking anything apart.

Do you have the instructions? Maybe a part nUmber is on there.

Possibly intake pipe difference?

Throttle body part has different part numbers from a 4.6 to 4.8 but that could just be because of model year. I’d be very surprised if the intake piping was different

The cold air 'box is designed specifically for the 4.6 so if anything changed on a 4.8 where it is positioned it would have to be modified. That shouldn't be hard to do. It's just thin metal.

The tube from the MAF housing to the throttle body is one solid plastic piece. I wouldn't mess with that.

The system uses a larger diameter Dinan MAF housing and throttle body. I don't know if the bolt pattern on the 4.6-4.8 intakes are the same. If not that would be a killer.

Dinan stated that system added 14HP and 11ft/lbs of torque on a 4.6.

Only way I know to find out if it fits is have someone with a 4.6 let you try theirs for fitment.

It’s just very odd it’s hard to find out this information. I’ve definitely seen the CAI in 4.8iS

Yep, I have the Dinan CAI, MAF, and TB installed on mine. That plus all the other Dinan goodies was the main reason I did something I thought I would never do... buy a car sight unseen across the country. :wow::yikes:

Very close to pulling the trigger on this CAI I found that is not listed anywhere. Might take the risk and hope that the CAI system fits on both iS models.

The part# might be different for the maf tube/housing. The 4.6 and 4.8 have different maf sensors from what I remember. Different physically like the mounting positions.

If you are just installing just the filter and heatshield it should be the same.

Or maybe it was just a different connector. All I remember when I had a 4.6is parts car I didn't keep it because something was different than my 4.8 lol sorry

The Dinan part is only the MAF housing. The stock sensor is transferred to the Dinan housing. The sensor can be different but it won't matter unless the bolt pattern is the same as the 4.6.

I believe the way the wires, tubing routed is different so it won’t install properly, plus the pipes going to the intake then to maf then Tb are diff.


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The connector to the MAF housing uses the stock connector. The Throttle body connector is also the same as stock. The throttle body connector doesn't change location. There is sufficient slack in the MAF connector wires. There are two rubber sleeves. One is at the exit of the airbox and one is at the throttle body. They would be opportunities for some adjustment difference.

I suggest going to a BMW dealer that installs Dinan products and get their input, call Dinancars or Steve Dinan who is no longer associated with Dinancars.

Buy it. It will work.
I installed the Dinan CAI on my '05 4.4i and it installed properly and works as it should but I did nothing more than buy and install an e70 N62b48 throttle body (which is larger diameter than a e53 N62B48 throttle body OR a Dinan TB for e53...


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I saw a few on eBay


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The stock MAF sensor is transferred to the Dinan housing. There is slack in the 4.6 MAF sensor wiring. If not enough all you would have to do is splice in what you need.

Dinan products go through significant research, testing and development. I wouldn't use a larger diameter TB than the Dinan offering. Also, unless you can find a Dinan tune that takes advantage of the CAI, there will be very little improvement in performance. It will sound much better but that's about all.

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Yes, all components of the Dinan CAI system from box through TB are larger in diameter than stock pieces. Decreasing the size will compromise the intent of increased air flow. That is also true if the low restriction cone filter is not included.

As I understand it CleanIsFast has yet to purchase the Dinan CAI system. I wanted to be sure he is aware if better performance is the goal the CAI won't deliver much if anything without the complimenting Dinan tune.

I did not buy the DINAN CAI, I passed for now. But it's still good information to know. And yes of course I would get a tune to go with it.

Might want to go to the Dinan website and read about the transmission software. IMO it is a great value, well worth the money if only for the fun factor.

Yeah ive had the DINAN Transmission software before in my 4.6iS when they ran a 50% off sale 1-2 yrs ago

I purchased all the Dinan engine/transmission performance mods except the supercharger just after break in. Since I have never had a transmission fail I often wonder if the transmission software helps longevity.

How did you like the Dinan transmission software on your 4.6is? Was the truck otherwise stock?

I have the specs for a n62b48 throttlebody from dinan and a shop that will do the work on an OEM throttle body, it just won’t say dinan on it.

Currently working on superscharger kits for all e53 x5s as I have the specs and parts as well. Ill be replicating tubing, and making tubing for an intercooled version as well. I also have one of the best tuners that I will reach out to come time to make the different tune for different engines and stages I make of the sc kits. Would anyone be interested? Trying tobdecide which blower to go with. Vortech or hks..any input?


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Keep us in the loop!

I'd prefer a turbo kit... but if I have to settle, SC will do just fine. :thumbup: Keep us updated.

I'd love to put a roots or twin screw supercharger on our 4.8iS

IT WILL BE TONS OF FUN but go in with eyes wide open.

In today's world 500-600 HP and the same in torque is no big deal unless it transfers to a 4.0 from 0-60 or better. If top end is your thing it takes much more HP to get to an impressive top end. The X5 has just too much frontal area.

I researched superchargers and twin turbos options. To do it right both routes were 8 to 10 grand and there were too many unknowns. The max result was about 150 HP and less than that in TQ after plowing the new ground. I didn't see the value based on $$ spent per HP/TQ increase. To get more the heads and exhaust need to modified to allow more 'air' out. Also, transmission software is needed to change shift points and to have a fully manual shifting trans.

Other considerations are that increasing HP and torque increases the risk that other parts of the engine, transmission and drivetrain will fail. While the bottom end of some of our engines are near bulletproof they usually have 100,000 or more miles of wear. I wouldn't have done the mods I have if I wasn't fine with blowing something up, If I couldn't DIY everything, if it had to be reliable or a daily driver.

The Dinan transmission software changes the shift points to a better power range. In full manual mode the transmission will not shift until you do so. Shifts will be firmer and quicker but their claim is only .01 improvement from 0-60. I think it is a great value for even a stock X5 and especially to get more out of engine mods.

Pm'd


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