View Poll Results: Will polishing the inside of an intake manifold improve performance?
Yes, it will improve performance
0
0%
No, it won’t do anything at all
3
100.00%
No, it will reduce performance
0
0%
Voters: 3. You may not vote on this poll
D17VTECPOWER threads consolidated - how a member should not behave
04-28-2018
#1501
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Re: How do I install head studs with the head on?
i would do what ARP advised instead of questioning it on a forum. follow the directions. be sure to use their included moly lube (ie:NOT oil) on the upper threads and on the bottom of the nut where it contacts the head.
04-30-2018
#1502
Quick tip- Oil dipstick mod
Something that really annoys me about smooth oil dipsticks is that the oil doesn’t stick to it very well, and it can be pretty hard to see the level, especially right after an oil change when the oil is almost clear. So what I just did is I used 80 grit sandpaper to make a crosshatch pattern on the end of the oil dipstick to give it more of a texture so the oil sticks to it better. Obviously clean the dipstick before reinstalling it if you choose to do this. But I am impressed with the difference that this made! It made a big diffrerence in how much oil sticks to the dipstick. Checking the oil is now much easier, especially when the oil is clean. I will upload a picture when I get home so you can see the difference. Anyways, I just figured I’d share this tip in case anyone else has problems with their smooth oil dipstick. If you have the same problem, maybe this is something you’d like to try.
04-30-2018
#1503
What does a shift kit do?
I’ve heard good things about shift kits, but I’m not sure what they do. I Googled it, but I pretty much just found that it makes the transmission shift quicker and firmer. Does that make sense? If so, I presume that there would be a performance benefit to me getting one for my transmission? I don’t know much about automatic transmissions, so please forgive my ignorance.
05-01-2018
#1508
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Re: Quick tip- Oil dipstick mod
with some lube on the tip? 
05-02-2018
#1509
Dtc p2a00?
For the last four years, my Civic has been randomly setting a P2A00 code. It has only done it about 5 times, so it’s very intermittent. I have replaced the sensor since then, and it still randomly sets this code. The car has no exhaust leaks before the o2 sensor, and I tried moving the o2 sensor wiring with the engine running to see if I could cause the fuel trim or o2 sensor activity to change, and I can’t change anything by moving or pulling on the wiring. What can be causing this? The car seems to run fine, but the short term fuel trim is constantly negative. It is usually between about -12 and -25, so maybe that has something to do with this problem. The fuel trim seems to go negative more when the engine is under load. I would appreciate any help, this code is driving me crazy. Thanks!
Last edited by D17VTECPOWER; 05-02-2018 at 08:22 AM.
05-02-2018
#1512
Are voltage stabilizers a scam?
I am asking about those capacitor boxes that connect to the battery to smooth out the voltage. From an electrical standpoint, the theory that the capacitors will absorb AC ripple and minor fluctuations in voltage is completely valid. There are even legit companies that make these things, like Mugen and HKS. However, wouldn’t the battery already do the same thing?
Here is a dyno test done on this: http://www.superstreetonline.com/how...-fact-fiction/
Here is a dyno test done on this: http://www.superstreetonline.com/how...-fact-fiction/
05-02-2018
#1513
If you think a good mechanic is expensive, try hiring a bad one
Re: Are voltage stabilizers a scam?
However, wouldn’t the battery already do the same thing?
05-02-2018
#1514
If you think a good mechanic is expensive, try hiring a bad one
Re: Dtc p2a00?
Exhaust (air/suction) leaks between engine and sensor?
Contaminated connector somewhere causing voltage bleedover?
Contaminated connector somewhere causing voltage bleedover?
05-02-2018
#1515
Re: Dtc p2a00?
As I said, there are no exhaust leaks before the sensor. Also, if you are asking if the o2 sensor connector is contaminated, it is not. I checked it, and the contacts are clean and shiny. I think this may be related to the fuel trim problem.
05-02-2018
#1517
Re: High RPM on the highway
i would be careful driving it at those speeds,
years ago i had a high revving issue like that (in a different vehicle) and all of a sudden cruising at 60mph the trans downshifted to first gear and nearly put my head through the windshield....thank god i had my seat belt on
years ago i had a high revving issue like that (in a different vehicle) and all of a sudden cruising at 60mph the trans downshifted to first gear and nearly put my head through the windshield....thank god i had my seat belt on
05-02-2018
#1518
If you think a good mechanic is expensive, try hiring a bad one
Re: High RPM on the highway
Thanks for the warning. Mine did the same thing yesterday. I was going 50, and the trans downshifted to 1st gear for no reason with no warning. I freaked out and threw it in neutral. Luckily nothing was damaged and it didn’t cause an accident. But the strange thing is that after the sudden downshift, the trans goes into 4th gear without a problem. Go figure.
Replace transmission
05-02-2018
#1521
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Rep Power: 78 Re: Dtc p2a00?
did you have that code recently? random codes over the past 5 years are irrelevent, IMO. you had a cracked header until recently. for all you know it's pulling fuel to make up for LTFT's that slowly richened up over the time it was reading extra air with the cracked header(but admittedly i work with ford ecu's, not sure if this is even possible on a honda). or it's possible your LTFT is currently correcting for a lean condition under low load due to a vacuum leak or exhaust leak, and when you add load and there's less vacuum/more exhaust, STFT pulls fuel to keep it running right(or how it thinks is right)
you could start changing parts, but why? and how do you know there's absolutely no exhaust leak? did you check with a smoke machine? have you retorqued the header bolts now that they've had a few heat cycles? have a few goofy honda friends that always reuse gaskets, never double check anything, always ask what the problem is but instead of taking advice, they start buying parts. the plus side to their mentality is they have a lot of spare parts lying around
you could start changing parts, but why? and how do you know there's absolutely no exhaust leak? did you check with a smoke machine? have you retorqued the header bolts now that they've had a few heat cycles? have a few goofy honda friends that always reuse gaskets, never double check anything, always ask what the problem is but instead of taking advice, they start buying parts. the plus side to their mentality is they have a lot of spare parts lying around
High negative fuel trim corrections can be caused by MAF sensor problems, high fuel pressure, leaking fuel pressure regulator diaphragm, faulty evaporative emissions components, leaking injectors, defective O2 sensors, exhaust leaks/pinholes before the O2 sensor, coolant temp sensor problems, and base engine issues such as low compression and incorrect camshaft timing.
also, the way you say "no leak before the sensor.." what about after it? i had a cracked/frozen up TAD sensor on my mustang which in turn caused it to inject too much air 24" past the o2 and it was enough to create a false lean condition that made my car run pig rich. drove me nuts. pulled my hair out for a month
05-02-2018
#1522
Re: Dtc p2a00?
did you have that code recently? random codes over the past 5 years are irrelevent, IMO. you had a cracked header until recently. for all you know it's pulling fuel to make up for LTFT's that slowly richened up over the time it was reading extra air with the cracked header(but admittedly i work with ford ecu's, not sure if this is even possible on a honda). or it's possible your LTFT is currently correcting for a lean condition under low load due to a vacuum leak or exhaust leak, and when you add load and there's less vacuum/more exhaust, STFT pulls fuel to keep it running right(or how it thinks is right)
you could start changing parts, but why? and how do you know there's absolutely no exhaust leak? did you check with a smoke machine? have you retorqued the header bolts now that they've had a few heat cycles? have a few goofy honda friends that always reuse gaskets, never double check anything, always ask what the problem is but instead of taking advice, they start buying parts. the plus side to their mentality is they have a lot of spare parts lying around
you could start changing parts, but why? and how do you know there's absolutely no exhaust leak? did you check with a smoke machine? have you retorqued the header bolts now that they've had a few heat cycles? have a few goofy honda friends that always reuse gaskets, never double check anything, always ask what the problem is but instead of taking advice, they start buying parts. the plus side to their mentality is they have a lot of spare parts lying around
also, the way you say "no leak before the sensor.." what about after it? i had a cracked/frozen up TAD sensor on my mustang which in turn caused it to inject too much air 24" past the o2 and it was enough to create a false lean condition that made my car run pig rich. drove me nuts. pulled my hair out for a month
05-03-2018
#1524
Re: High RPM on the highway
Out of curiosity, I reset the PCM by disconnecting the battery, and it’s now it won’t go into overdrive again. I shouldn’t have reset it! 
This is so weird. Does this sound like a bad PCM? It’s obviously something electrical since disconnecting the battery has an effect on it, but I’m not sure what it could be. I know it’s not mechanical though because if it was, resetting the PCM wouldn’t have an effect. Thanks for the help!
This is so weird. Does this sound like a bad PCM? It’s obviously something electrical since disconnecting the battery has an effect on it, but I’m not sure what it could be. I know it’s not mechanical though because if it was, resetting the PCM wouldn’t have an effect. Thanks for the help!
05-03-2018
#1525
If you think a good mechanic is expensive, try hiring a bad one
Re: Should I wrap my header? Poll
Wrap holds moisture, could cause steel pipes to rust prematurely
05-03-2018
#1529
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