Shark Injector Installed

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Originally Posted by KevinC

OK, the deed is done. Initial impressions? General drivability GREATLY enhanced. Throttle response is much better in routine driving. Never really considered the drive-by-wire in my car to be at all bad, but in comparison, it stunk compared to how it feels now. For example, the car just feels a LOT more alive immediately after shifting into 2nd at normal cruising velocities.

As for the dreaded 4k dip that I'm hoping to cure - I only got to put my foot into it a couple of times so far, but it's still there, at least slightly. This was in 105-degree heat with the AC blasting, maybe not the best conditions to get a fair read, so I'll drive it some more before I pass judgment on that issue, but if it's not (largely) resolved, I'll be disappointed. Stay tuned.

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Glad to hear the car feels more alive. Ill be waiting for more updated impressions.

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Originally Posted by FL116

Glad to hear the car feels more alive. Ill be waiting for more updated impressions.

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Ditto!

SC

Driven some more now (though I've also been driving the "other" car lately, talk about a way to make your ZHP feel limp), and is definitely a big improvement over stock. The 4k hesitation is still there, but it's improved. I'm running some Techron through it now, and trying to drive it a bit more aggressively, hoping that will perhaps help some too. I'll update again in another week or so.

:thumbsup

There will always be a little blip around 4-4.5k. That's when the DISA valve opens...
I had the dip "fixed" at the dealer.. They sent it to BMWNA for rework. It was still there after that. Rebuilding the DISA helped a lot but I think that transition is always going to be there

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Originally Posted by Sockethead

There will always be a little blip around 4-4.5k. That's when the DISA valve opens...
I had the dip "fixed" at the dealer.. They sent it to BMWNA for rework. It was still there after that. Rebuilding the DISA helped a lot but I think that transition is always going to be there

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I think I need to get the GAS DISA rebuild kit for my ZHP....

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Originally Posted by cakM3

I think I need to get the GAS DISA rebuild kit for my ZHP....

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Yes you do. :-)


Thumbs, iPhone, Tapatalk.

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Originally Posted by Sockethead

There will always be a little blip around 4-4.5k. That's when the DISA valve opens...
I had the dip "fixed" at the dealer.. They sent it to BMWNA for rework. It was still there after that. Rebuilding the DISA helped a lot but I think that transition is always going to be there

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I don't have any sort of dip at 4k or anywhere for that matter. Here's a run through 4k in 2nd and 3rd.

https://vimeo.com/130369360

nice and linear, william! do you have the shark injector tune?

i'll have to post a video of mine. i have a slight dip but it seems quite a bit quicker overall than yours.

peter

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Originally Posted by cakM3

I think I need to get the GAS DISA rebuild kit for my ZHP....

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I have the full-on DISA "Gold" from GAS, a brand new DISA with the kit preinstalled. Didn't help when I added it 3 years ago.