Z feels slower after plenum spacer?
Registered User
Joined: Jun 2010
Posts: 2,901
Likes: 13
From: Greenwich, Connecticut
Idk why op is getting all upset, everyone here basically gave him the answer. You should of been weary and do a thorough research about the product you'll be buying. This doesn't just apply to car parts. What if you were to fall victim to this guy that was on here selling some rev matching product that no one has ever heard of from a company no one has heard of. If you plan on doing anymore mods do your research and look at reviews/others people's experience with using that product and know what your getting into if there are negative consequences. Just like buying anything else, not just car parts.
I installed my motordyne 5/16 plenum spacer the other day and so far ive noticed these things...
- Smoother idle and very quiet now.
- The RPM's seem to raise alot quicker, im able to get to 6k alot faster now.
- The car doesnt sound as "mean" in lower RPM's its not as deep sounding as it was around 2500rpm's (which kinda sucks)
- Now the big one. I dunno if its the lack of the deep roar but the car feels less tourqey, by that I mean I feel I have to push it harder to really feel it and get sucked into my seat, it used to be very meh around 2-3k and then pull hard.
Now it just kinda pulls evenly up until like 5k+ and then finally pulls hard.
Is any of this normal? I know I installed it perfectly, there is no CEL or leak sounds and ive had it on for 2 days, do I need to reset the ECU or something? Its kinda crappy because I was told it would make my car sound "meaner" and pull harder.
- Smoother idle and very quiet now.
- The RPM's seem to raise alot quicker, im able to get to 6k alot faster now.
- The car doesnt sound as "mean" in lower RPM's its not as deep sounding as it was around 2500rpm's (which kinda sucks)
- Now the big one. I dunno if its the lack of the deep roar but the car feels less tourqey, by that I mean I feel I have to push it harder to really feel it and get sucked into my seat, it used to be very meh around 2-3k and then pull hard.
Now it just kinda pulls evenly up until like 5k+ and then finally pulls hard.
Is any of this normal? I know I installed it perfectly, there is no CEL or leak sounds and ive had it on for 2 days, do I need to reset the ECU or something? Its kinda crappy because I was told it would make my car sound "meaner" and pull harder.
Thread Starter
Banned
Joined: Mar 2014
Posts: 99
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From: tempe, az
Yeah something is wrong. I almost got beat by a newer Mazda MX5 miata today, and I was almost red lining it. It was like even until 3rd gear. The MX5 looked stock and even had a woman driving it.... My Z is slow as ****.
Thread Starter
Banned
Joined: Mar 2014
Posts: 99
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From: tempe, az
Are you serious? Isnt the MX5 a lil 2.0 na? If we "should" be able to take a Si a MX5 should be no sweat, I expected to dust her but I had like no tourque, I was like "why am I not flying?" and realized I was at like 5k RPM''s already.
Im starting to regret buying this car.... I should have gotten a S2000
Im starting to regret buying this car.... I should have gotten a S2000
Last edited by czirrfb; Apr 1, 2014 at 01:54 PM.
Look if it's that bad, do a compression test on your car. Run a leak down test. Take it too a dyno. If it's below 210-240 who depending on the dyno or who's running it you have issues. Other than than that, it could be crummy tires, bad clutch, or an electronic issue.
And here's for some bench racing.
http://www.zeroto60times.com
And here's for some bench racing.
http://www.zeroto60times.com
Thread Starter
Banned
Joined: Mar 2014
Posts: 99
Likes: 0
From: tempe, az
It's a ratchet, extender, and spark plug socket. Then the compression gauge...well I guess a big old socket or way to turn the engine. If you can put on a spacer you can do this.
Thread Starter
Banned
Joined: Mar 2014
Posts: 99
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From: tempe, az
Registered User
Joined: Jun 2010
Posts: 2,901
Likes: 13
From: Greenwich, Connecticut
Are you serious? Isnt the MX5 a lil 2.0 na? If we "should" be able to take a Si a MX5 should be no sweat, I expected to dust her but I had like no tourque, I was like "why am I not flying?" and realized I was at like 5k RPM''s already.
Im starting to regret buying this car.... I should have gotten a S2000
Im starting to regret buying this car.... I should have gotten a S2000
Last edited by Jah70; Apr 1, 2014 at 03:30 PM.