DAP kit quality?

[VArova87]

Graduation money is FLOCKING in, and its time to start ordering stuff for the 120k tune up! already got good advice for plugs and wires (magnacore and Bosch +4 plugs) but has anyone got the filter kit from DAP? looks like it comes with everything, just wondering about the quality of the parts it comes with...if its not good, what brands of filters should I get?

[Paul Grant]

A word of warning. While I have no personal experience with the Bosch +4 Platinum plugs, it seems as though there is a rather large contingent of Dwebbers who have had trouble with them working well in Rover engines. Don't ask me why or how. Do a search on discoweb.org for Bosch plugs and you'll find more than a few threads.

PS I've had very good luck with NGK's.

[smileyq]

DAP has good quality stuff so don't shy away from it. I plan on getting my brake kit from them when I need it.

[TerryS]

I too have heard lots of bad stuff about Platinum Plus, that doesn't even take into consideration the price difference.
I will take NGK anyday. I use BPR5ES-11

[Adam in NYC USA]

This "problem" has been already addressed elsewhere. The problem is not with the Bosch plugs.

http://landroversonly.com/forums/showthread.php?t=9796 Down toward the bottom of the listing.

The problem is the type of ignition wiring you are going to use with the Plat +4s. If you are going to use those plugs, you gotta use premium wires so the full secondary voltage is not lost in the wiring. That way you will have the optimium energy transfer from the coil or coil pack to the combustion chamber.

I have been running Plus 4s for 10 months with no compliants. The D1 starts right up. The mechanic changed the wiring and the plugs at the same time. I have the GEMS setup with the NAS 4.0.

Nothing wrong with the plugs. If you want the plugs, you gotta use the right wires. That is the price you pay when you want to move up. You need the good stuff at every part of the chain. It is only as strong as the weakest link.

Some owners use Magncor wires , others Taylor, others Bosch (OEM). I look at my and they look like Bosch. I prefered Accel myself or Taylor but then I have to make my own wires with the stock kits.

What a chore and I don't have the time right now.

[Disco Mike]

Originally Posted by Paul Grant

A word of warning. While I have no personal experience with the Bosch +4 Platinum plugs, it seems as though there is a rather large contingent of Dwebbers who have had trouble with them working well in Rover engines. Don't ask me why or how. Do a search on discoweb.org for Bosch plugs and you'll find more than a few threads.

PS I've had very good luck with NGK's.

Paul, Tell him the whole story, you had bad luck using the Bosh plugs while running old factory wires or cheap replacements.
As mentioned before, a set of Bosh Platium Plus 4's with good wires will out torques a set of factory plugs with good wires.
I haven't had one person, who has used this combination of plugs and wires, not experience good results.
As far as that goes, Bosh will replace them for free or give you your money back if you aren't happy with them, show me anyone else that will put that in writing on their boxes.
Price wise, yes they are a little more expensive, around $6 apieceb ut they will pay for them selves easily in improved performance.
Mike

[Muddy Oval]

We don't suggest OR sell Bosch Plus 4's. We use the original ones..
As to the original question- ALL the DAP filters are OEM that we import from the U.K. The air filters and oil filters are usually Coopers, which is what the original ones sold in the Land Rover boxes were. NONE of the stuff is a Chinese copy or stuff like you'll get from other high volume places.

[Adam in NYC USA]

I wish I had access to:

an ignition analyzer and two identical Discos in every way including the number of scars and scuffmarks , drop X wires and plugs and go against Bosch +4s. I would like to see the results with NGK, Champion, even those new Iridium plugs. Run them and see how they do in a 4.0 V8.

Let the analyzer show what is going on and photograph the output.

Finally , throw (well , you cant really throw a LR onto a Dyno, but hey) the both of them on the dyno before and after and see which smells like roses.

Just me.

[Muddy Oval]

The way I look at it- some people (actually quite a few) have had problem running those plugs. Why take the chance, even though other people haven't had problems? Seems too risky- so sticking with the stock plugs seems to work fine. The original plug wires SUCK though... ANYTHING is an improvement

[roverX]

As Mike stated, you will have problems with the +4's if you don't upgrade your plug wires. It's like modding out your disco and not putting on MT's and expecting it to perform well offroad. I have run the +4's with Magnecore 8mm wires for over 60,000 miles with no problems. The only problems I have heard about the +4's is from people who are up front enough to admit they didn't upgrade their wires. If someone tells you the +4's sucked for them...ask them what plug wires they used....that will tell you the whole story.

As far as DAP's quality is....it is good stuff and Steve will stand behind the product he sells.