Help me reach goal of 5 second v6 auto? - Drive Accord Honda Forums
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post #1 of 41 Old 04-16-2017, 07:32 PM Thread Starter
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Help me reach goal of 5 second v6 auto?

For my first car, Im quite content with my 8th gen. As I got it , I was looking forward to turning this thing into my personal money pit devoted to modding. However, digging around for peformance mods for the car after the fact has proven frustarating.

Besides the 5 speed, the vcm sucks (Polite way of putting it) The lag when going from eco to using all cylinders is extremely annoying, and this is probably the deterrent for bolt on turbo or supercharger kits for this generation, Hopefully the vcm muzzler I ordered can alleviate this, along with an ecu reflash. And fwd, but If I cared about that I wouldn't have bought the honda and gotten a beemer.

But to the topic at hand, what does the rest of the forum think is neccesary in terms of mods to make this sedan a mid 5 second car. I understand the reasons for possible anymosity, but any help is greatly appreciated. Currently stock with a vcm muzzler coming on the way and possibly toyo summer peformance tires.


Last edited by RickBlaine; 04-16-2017 at 08:00 PM. Reason: swearing
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post #2 of 41 Old 04-16-2017, 07:39 PM
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Let's take a look here where ctandc and his souped-up 6-6 does an 1/8 mile in the 8s. He's currently looking for a 1/4 mile in the 12s.

So, please, tell us again what your goal for the V6 5AT is?

You might be able to pull off a mid-5 second 0-60... if that.


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post #3 of 41 Old 04-16-2017, 08:17 PM Thread Starter
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Originally Posted by WILLYumD View Post
Let's take a look here where ctandc and his souped-up 6-6 does an 1/8 mile in the 8s. He's currently looking for a 1/4 mile in the 12s.

So, please, tell us again what your goal for the V6 5AT is?

You might be able to pull off a mid-5 second 0-60... if that.
TBH, 13.4 is pretty low, directly comparable to a 335i. And I know an auto will ever break sub-13, but thats ok.
My best 0-60 after about 5-10 runs total was 6.37, bone stock, which would translate to about somewhere in a 15 second quarter.
Plus assuming whp on a stock auto is about 215, bolt ons like pcds and throttle body spacers and posibbly more should put on considerable gains. K-tuned afterwards could put on 240 whp, right? I could be overestimating the potency of ecu reflashing, but I think the potential is there.
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post #4 of 41 Old 04-16-2017, 10:42 PM
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I believe someone here did a couple of mods on their V6 AT, and basically made it so it goes as fast as a 6/6, so mid-5 0-60 pull is doable. A search in the forum should find the thread.

I would say the biggest difference will come from tuning it. Just something like a 93 tune and VCM disable can do wonders. If you can get intake and exhaust of high airflow and tune the engine to utilize it, it will also help.

And don't forget basic maintenance. That should come before everything.

However, do remember the automatic transmission isn't the greatest platform to mod on, but I guess since you have a V6 Sedan, you can only have the slushbox. There are things you can mod, like tuning, and there are things you can't, like the gear ratio. The less aggressive gearing(the 1st gear on an AT is something like 2.8, while the 6/6 has a 1st gear ratio of 3.9) on the V6 AT already puts it at a huge gearing disadvantage. The slower shifting of an auto will also affect the performance. Another thing will be the VTEC - V6 AT doesn't have the performance VTEC(so no "VTEC kicked in, yo!") unlike the 6/6. Not saying you can't make it faster, but I think ultimately, the slushbox will be your bottleneck.
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post #5 of 41 Old 04-17-2017, 03:18 AM
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5 second 1/4 mile or 0-60?

If 0-60, full bolt ons and a proper dyno tune will make it happen. There is a '13 accord A/T with full bolt ons/dyno tune and its running 4.3 0-60. No kidding.

1/4 mile...I don't know about that. A twin turbo VQ35 ran a 6 second 1/4 mile, I doubt the J35 can break that record.

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post #6 of 41 Old 04-17-2017, 03:25 AM
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I believe someone here did a couple of mods on their V6 AT, and basically made it so it goes as fast as a 6/6, so mid-5 0-60 pull is doable. A search in the forum should find the thread.

I would say the biggest difference will come from tuning it. Just something like a 93 tune and VCM disable can do wonders. If you can get intake and exhaust of high airflow and tune the engine to utilize it, it will also help.

And don't forget basic maintenance. That should come before everything.

However, do remember the automatic transmission isn't the greatest platform to mod on, but I guess since you have a V6 Sedan, you can only have the slushbox. There are things you can mod, like tuning, and there are things you can't, like the gear ratio. The less aggressive gearing(the 1st gear on an AT is something like 2.8, while the 6/6 has a 1st gear ratio of 3.9) on the V6 AT already puts it at a huge gearing disadvantage. The slower shifting of an auto will also affect the performance. Another thing will be the VTEC - V6 AT doesn't have the performance VTEC(so no "VTEC kicked in, yo!") unlike the 6/6. Not saying you can't make it faster, but I think ultimately, the slushbox will be your bottleneck.
I just saw a post yesterday on Ktuner's FB, they went deeper inside the ECU and somehow made the auto trans shift very smoothly and faster somehow. Soon there will be options to play with the trans with Ktuner. That was on the 9th gen btw. You're right with the VTEC, its rather VCMtec lol.

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post #7 of 41 Old 04-17-2017, 03:43 AM
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post #8 of 41 Old 04-17-2017, 03:57 AM
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auto accord ran 4.3 0-60!?

ummm. wtf was under the hood? a rocket?

seriously though, running a 5 second 0-60 aint gonna be easy. You are better off getting a car that is fast to start with and take it from there. I wouldn't trust the accord auto trans anyways. I've yet to see an auto honda/acura transmission that can take a consistent beating without frying the clutches at some point.

putting all that money into the accord just doesn't seem like the best thing to do IMHO. If it was a manual then that's a different story. Or if you really don't care about roasting your transmission then go for it lol

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post #9 of 41 Old 04-17-2017, 04:07 AM
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Originally Posted by 08 v6/6 View Post
auto accord ran 4.3 0-60!?

ummm. wtf was under the hood? a rocket?

seriously though, running a 5 second 0-60 aint gonna be easy. You are better off getting a car that is fast to start with and take it from there. I wouldn't trust the accord auto trans anyways. I've yet to see an auto honda/acura transmission that can take a consistent beating without frying the clutches at some point.

putting all that money into the accord just doesn't seem like the best thing to do IMHO. If it was a manual then that's a different story. Or if you really don't care about roasting your transmission then go for it lol
The owner dailys it and has 100k+ miles on it. He always takes it to mexico and beats the living crap out of it.

His tuner is one of the best tuners out there. He made 278 WHP on the accord with 30+ MPGs. I also got my van tuned by him.

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post #10 of 41 Old 04-17-2017, 04:30 AM Thread Starter
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The owner dailys it and has 100k+ miles on it. He always takes it to mexico and beats the living crap out of it.

His tuner is one of the best tuners out there. He made 278 WHP on the accord with 30+ MPGs. I also got my van tuned by him.
Once again, thanks for all the replies everyone . I figured the gear ratios for the 5 speed were one of the worst deterrents to the acceleration. However if tuning it has made the shifting that much smoother for this guy, then surely gains will pile on after throttle mody spacers and possibly headers. Ive been reading swapping with the tl's parts puts on some numbers. And also, i know what Pre catalytic deletes are, but could someone explain how this helps the performance? And how much gains are from this paired with an rv6 j-pipe?

And to clarify, 5 second 0-60 is the goal, so probably a low to mid 14 1/4. My direct competitor I guess you could say is to compete with a lancer ralliart (09+) or the turbo 328i. I originally wanted the lancer but wanted to mod my way to these numbers and overcome the "wrong wheel drive". Plus for everyone one lancer in the us there was 20 accords within 100 miles near me so that helped the decision.
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post #11 of 41 Old 04-18-2017, 11:44 AM
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Originally Posted by JP_8thgen View Post
But to the topic at hand, what does the rest of the forum think is neccesary in terms of mods to make this sedan a mid 5 second car. I understand the reasons for possible anymosity, but any help is greatly appreciated. Currently stock with a vcm muzzler coming on the way and possibly toyo summer peformance tires.
I know the journey is more important than the destination and I hope you enjoy tinkering with your car. But suggest you keep your expectations realistic. You’ll be lucky to get your V6-sedan down to 6.1 seconds to 60 mph.

I hope you know your V6 Sedan has a different engine than the V6 engine used in the 6MT Accords. Your sedan uses a “non-performance” engine. The 6MT-V6 has true “dual-lobe” VTEC and yours does not. Your engine uses a single lobe cam which means there is no VTEC to “kick-in.” That is one reason it has less power off the line AND less rip at high rpm.

That’s not to say you can’t have fun making it faster. But I suspect anything close to the mid-5 second range to 60 mph will simply not happen.

My suggestion for first-round mods:

• 18-19 lbs. OEM 16” wheels with light weight tires - HUGE reduction in rotational inertia
• Underdrive lightweight pulley - they work!
• Drop-in panel air filter - keep your stock air box. It is better for low-rpm torque and that is what your auto needs.
• Ktuner – the base program provides a good boost to low-rpm torque, but obviously requires premium fuel.

For 0-60 runs, I would avoid exhaust mods and intake manifold mods because they will shift power up the rpm curve and make your car more of a dog off the line. For quarter mile runs that may take you above 95 mph, exhaust and manifolds mods are okay. But that is because a quarter-mile run gives you the time and distance required to make up for what you lose off the line. You won’t get that time/distance with 0-60 runs. Most of that will happen in first gear. Do things to manage torque, not HP.

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post #12 of 41 Old 04-18-2017, 01:04 PM
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Easy to do... just don't follow the 6-6 guys. Look at my list, and upgrade to 3.7L TB. Once you go that far, light wheels and meaty sticky tires. Then learn to launch.
So far nobody here boasts a .007 average reaction time. So it seems to me a lot put too much hassle into hard launches.

The trick with the VCM engine is low end torque, as 2nd gear requires it once you pull out of 1st. Or hit red line hard when shifting. You are not going to break an engine as long as RPM does not stay too long in the top end.

I never have to use a VCM disabler and keep VSA enabled. Learning how to launch with enough wheel spin and not tripping VSA to hinder engine, will be faster than hitting the throttle wide open. You'll be high 5s but that is it until you add 100 hp NOS wet injection. Bpearl had it going on even with out the 3.7L upgraded intake manifold.

Until guys here start talking torque instead of HP, they won't help much with your needs.

If you have hesitation then there is something wrong with your VCM engine. I have no hesitation and plenty of power to keep up with a manual though once I am in the top end of 2nd their extra gear spread will pull away. Can't help it without NOS or some serious engine mods, like a cam and stroking.

Automatics eat torque and there is no getting around it.

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post #13 of 41 Old 04-18-2017, 07:23 PM
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If you've seen my posts, you'd know that I have a V6 Auto Sedan with most of the mods and I still push 0-60 in over 6s.

Ktuner
Takeda SRI
J37 IM
J37 TB
RV6 HFPC
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Magnaflow CBE

Don't mod the 8th gen auto. It's not worth the gains. 9th gen auto v6 reacts much better to the same mods.

0-80 with Magnaflow CBE,Ktuner, and Takeda SRI:
0-80 with all the other mods:

As you can see, these bolt didn't really do much for the auto v6.
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post #14 of 41 Old 04-18-2017, 10:13 PM
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If you've seen my posts, you'd know that I have a V6 Auto Sedan with most of the mods and I still push 0-60 in over 6s.
That's like $2500 in parts... That is truly disheartening, RIP your wallet!

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post #15 of 41 Old 04-19-2017, 03:00 AM
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And for those caught up on a 1/10nth of a second, remember that 60 mph on the speedometer ain't actually 60 mph. Its more like 59. To actually time 0-60 you need to time 0-61 on your speedometer and that will add another 1/10nth or so. On the track those fractions of second will make a difference. But in the street? Not so much. If that 1/10nth really matters, drive around with your gas tank only 1/3 full. That weight reduction will amount to that 10nth.

And also for the record, by my stop watch this stock 9th gen V6 Sedan needed 6.3 seconds to hit 60 mph. Its not THAT much faster than an 8th gen V6 Sedan.


This 9th gen V6-6AT Coupe needed about 6.1 seconds:


This 9th gen V6-6AT Coupe needed about 5.9 seconds:


Magazines (expectations) and real life can be different.


Also, with HEAVY mods, this 9th gen 6-6 is about 5.6 seconds to 60 mph.


Hitting the mid-5 second range in real life is not easy.


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