eric951turbo

Ok, I want to change my spark plugs back to Bosch. Installed NGK Iridium in Spring, now back to Bosch.

I want the best of Bosch.

Does anybody have the code number I need. I have a 86, 951

Went to bosch website and couldnt find the info.

thanks

fortysixandtwo

Unless you've upped the power a lot, go with the factory heat range. For Bosch that would be the WR7DC+

MooreBoost

search is your friend

eric951turbo

Power is a bit up... Autothority Chip + Shimmed Wastegate.
Stock turbo (K26-6), no maf etc...

Would you still recommend WR7DC+

minho78

WR7DC+ or BPR6ES

CPR

Yep.

And yep.


Eric,
did you not care for the NGK Ir's?

Black51

Ya, what didn't you like about the NGK's. Why iridium? Have you tried other NGK's?

choinga

Iridum's are no good for our cars - stick with copper...Personally, I've had the best experience with the NGK 7ES's and I think you'll find a vast majority of folks on this board that have slightly modified cars use those plugs...that's how I found them.

boston951

+1

NGK is cheap and effective. Series 6 for stock to moderately modified and series 7 for the higher boost cars.

I replaced my Bosch plugs and like the performance as well as the price.

eric951turbo

I actually called last year NGK last year to get information about the iridiums, I guess they where good at selling me the product.

I've installed them last year on my old NA, and it made a huge difference, the engine was better, felt like I had more power.

Last spring with my new T, I had fuel delivery problem, took a while to find the problem (bad AFM), in the process of finding the problem, I decided to switch to Iridium because I had success with them with my NA.

Thanks all for the infol

will951

Subscribed. I've gotta go through emissions soon and new set of plugs will give me the best chance....

Black51

Like some other guys here, I can vouch for the NGK BPRx series. Haven't had a miss since putting them on.

eric951turbo

WR7DC+ installed this afternoon.

Thanks guys