Advanced Forced Induction & N/A Engine Tuning This forum is brought to you by Racing Greed in Port Coquitlam.
Supercharger vs Turbocharger vs NA? Hondata vs Megasquirt? 94oct vs 87oct? Through technical discussion, let's find out what will the best option for you...
 |
 | | 
10-16-2010, 08:44 AM
|
#26 | | I bringith the lowerballerith
Join Date: Jun 2010 Location: Surrey, BC
Posts: 1,160
Thanked 1,164 Times in 201 Posts
Failed 59 Times in 18 Posts
| Quote:
Originally Posted by Lomac  Stock, as in completely bone stock? Nothing done to it? Provided it's of North American descent, it doesn't require 94 octane and you'll be fine with a lesser grade. | it's not bone stock, just has a catback system, air filter, and fmic for engine mods =P Quote:
Originally Posted by pintoBC_5sfte is chevron the only one with 94 there now? in kelowna i think that its the only one left with 94... haha they better not get rid of it or im hooped  | yeah chevron is basically the only one that has 94 now
__________________
Too many styles, so little cars.
89' Skyline GTS-T - Big Turbo Widebody
1990 FC RX7 - Tap Walls, Bang Limiters
1998 Integra - RIP
1992 Celica GT - SOLD
1985 Trans Am Firebird - SOLD | 
|  | |
10-16-2010, 04:06 PM
|
#27 | | Rs has made me the woman i am today!
Join Date: Jun 2002 Location: Vancouver
Posts: 4,461
Thanked 1,276 Times in 308 Posts
Failed 25 Times in 12 Posts
|
I have an Cobb AccessPort and usually run the 93 octane maps, but always switch to 91 when heading on a road trip. If you can't load a new tune on the fly, then I'd stick with a 91 tune since it's easier to find gas, especially if you're traveling outside the GVRD.
| |
| | |
10-22-2010, 12:30 PM
|
#28 | | I contribute to threads in the offtopic forum
Join Date: Oct 2009 Location: richmond
Posts: 2,837
Thanked 1,490 Times in 570 Posts
Failed 172 Times in 64 Posts
|
Can you not save both maps on a laptop so when you want to switch it up you can?
__________________
Rise Auto Salon
11938 95a Ave Delta
I can be reached VIA text @ 778-232-1465
Oil change special $70 5 liters synthetic oil including OEM filter Fender rolling from $45 per fender
Car Audio:
Focal, Morel, Genesis, Clarion, Scosche, Escort, Compustar, GReddy, Blitz, Tomei, Motul, Endless, Defi, Cusco, Nismo + More
We specialize in:
Custom Car Audio
Race/4x4 Fabrication
Forced Induction
Engine Swaps
General Maintenance | |
| | |
10-22-2010, 12:33 PM
|
#29 | | Ricer Mod
Join Date: Mar 2005 Location: Smithers
Posts: 7,008
Thanked 5,276 Times in 1,501 Posts
Failed 214 Times in 74 Posts
|
You can but you have to have a program like an ostrich for Honda's that allows you to change the tune without having to actually burn it to a chip. Also that means you have to carry your laptop with you at all times just in case.
Berz out.
__________________
President of RS Beat Down Crew
| |
| | |
10-26-2010, 02:31 AM
|
#30 | | Banned (ABWS)
Join Date: Nov 2003 Location: The Wack
Posts: 889
Thanked 60 Times in 33 Posts
Failed 35 Times in 21 Posts
| Quote:
Originally Posted by IMASA I have an Cobb AccessPort and usually run the 93 octane maps, but always switch to 91 when heading on a road trip. If you can't load a new tune on the fly, then I'd stick with a 91 tune since it's easier to find gas, especially if you're traveling outside the GVRD. | Thats the proper way to do it. I'm doing this with Vipec later this next year.
| |
| | |
11-21-2010, 10:32 PM
|
#31 | | Rs has made me the woman i am today!
Join Date: Feb 2006 Location: Vancouver
Posts: 4,054
Thanked 62 Times in 23 Posts
Failed 3 Times in 2 Posts
| Quote:
Originally Posted by tofu1413 i was wondering about this question for myself...
so i guess i need a tune for 94?
83mm bore, 11.5:1 CP forged pistons, stock ITR cams (this is on my 2000 ITR ) im running just a apexi VAFC right now.. | You have a get a good tuned 91 map and see how much detonation is there compared to 94. Stock ITR might not make 'that' much of a difference IMO if you switch over ot 94. lol
Switch over to S300 or AEM if you decide to 'make' more power.
| |
| | |
11-21-2010, 10:36 PM
|
#32 | | :: Sells McLarens, Not tofu :okay: ::
Join Date: Aug 2007 Location: vancouver
Posts: 10,766
Thanked 11,841 Times in 3,338 Posts
Failed 211 Times in 89 Posts
|
^ found a dude thats willing to check out whats going on by spring.
doesnt matter right now anyways, as the car is sitting inside the whole winter so far.
__________________
13' Nissan DBA-R35 GT-R Black Ed - Black met. - "Sophia"
90' Honda EF Civic HB // 04' Honda Pilot Granite
- The Drinker of Many Many Coffees @ McLaren Vancouver
| |
| | |
11-22-2010, 03:59 PM
|
#33 | | うに
Join Date: Apr 2008 Location: /
Posts: 1,312
Thanked 1,008 Times in 402 Posts
Failed 136 Times in 68 Posts
|
I sort of regret tuning my RSX to 94.... its a bitch to always find a Cheveron... and when you go on a road trip, Cheveron isn't always closest....
I had this problem when I drove to Calgary for the summer.... I was forced to fill with Cheveron and shell (they don't have Cheveron in Alberta) and then my entire time in Calgary I was running 91 or 93 from Huskey and the car knocked and ran like shit.....
BTW: Race header with Greddy SP2 or Apexi WS2 or Brola or 05-06 cat back = win!
not too loud
I love mine!
T1R b-pipe + 05-06 muffler 
Last edited by PK-EK; 11-22-2010 at 04:18 PM.
| |
| | |
11-22-2010, 05:10 PM
|
#34 | | RS Veteran
Join Date: Dec 2001 Location: GTA
Posts: 30,643
Thanked 12,456 Times in 5,113 Posts
Failed 483 Times in 316 Posts
|
^
Retune it back to 91. 
__________________ Quote:
Originally Posted by Badhobz You show me a 1998 240sx in prestine condition and ill fucking suck your dick. no homo! | Quote:
Originally Posted by unit i want badhobz freshly squeezed nipple juice | | |
| | |
11-22-2010, 09:32 PM
|
#35 | | Rs has made me the woman i am today!
Join Date: Feb 2006 Location: Vancouver
Posts: 4,054
Thanked 62 Times in 23 Posts
Failed 3 Times in 2 Posts
|
Well there are many ways to go abouts octane gas. lol You can try 91 octane tuned with Water Methanol Injector on NA application. There you can sort of fill up 91 octane, but you'll have the trouble of filling up the methanol ever so much.
| |
| | |
11-28-2010, 11:58 AM
|
#36 | | Wanna have a threesome?
Join Date: Oct 2010 Location: Squamish
Posts: 4,889
Thanked 5,054 Times in 1,657 Posts
Failed 439 Times in 203 Posts
|
For those of you who tune to 94, why not just keep a couple bottles of octane booster in your truck for the odd time that you can't get to a Chevron.
| |
| | |
12-01-2010, 05:30 AM
|
#37 | | Head Moderator
Join Date: Dec 1982 Location: Great White Nor
Posts: 22,661
Thanked 6,462 Times in 2,081 Posts
Failed 98 Times in 51 Posts
| Quote:
Originally Posted by MindBomber For those of you who tune to 94, why not just keep a couple bottles of octane booster in your truck for the odd time that you can't get to a Chevron. | Because you would need a hell of a lot of bottles of booster to raise it up to 94oct. If a bottle claims to raise octane by 5 points, it's actually 0.5 octane points (so 87 becomes 87.5oct).
| |
| | |
12-06-2010, 10:50 AM
|
#38 | | Banned (BBM)
Join Date: Jul 2004 Location: Vancouver
Posts: 16,142
Thanked 627 Times in 368 Posts
Failed 1,106 Times in 390 Posts
|
^
damn! for real? thats pretty useless considering i thought the 5 points actually well...bring it +5
87 octane + 5 = 92 | |
| | |
12-06-2010, 11:18 AM
|
#39 | | Proud to be called a RS Regular!
Join Date: Apr 2007 Location: fml
Posts: 109
Thanked 10 Times in 10 Posts
Failed 3 Times in 3 Posts
|
fml
Last edited by danz; 06-27-2013 at 03:37 PM.
| |
| | |
12-06-2010, 11:46 AM
|
#40 | | NOOB, Not Quite a Regular!
Join Date: Feb 2006 Location: Vancouver Islan
Posts: 32
Thanked 0 Times in 0 Posts
Failed 0 Times in 0 Posts
|
My bro has a RSX-S k proed and was tuned with 94 first. When Petro Can stopped selling 94, he got a few tanks of 91 and retuned. He only lost 1 whp and a little torque, so I would say keep it at 91. I drove my turbo ls to Calgary, and almost ran out of gas on the way back because half the gas stations off the highway only sold regular... plus the car ran like shit because i was forced to fill up with 91 while in Calgary.
Last edited by up&atam; 12-06-2010 at 05:57 PM.
| |
| | |
04-20-2011, 08:30 PM
|
#41 | | NOOB, Not Quite a Regular!
Join Date: Mar 2011 Location: Vancouver
Posts: 27
Thanked 3 Times in 2 Posts
Failed 0 Times in 0 Posts
|
+1
Best torque generally occurs when peak cylinder pressures are reached roughly 15 degrees after top dead center. As long as you can advance your timing enough to have peak cylinder pressures at the right time you are good. Turbo set ups, especially high boost applications are nearly always knock limited due to extremely high cylinder pressures. This is why you see large hp gains from W/M injection and high octane fuels because they allow timing to be advanced to the point where peak cylinder pressur occurs at the right moment (roughly 15deg atdc instead of for example 25deg atdc knock limited). If you are not having detonation/knock before your torque curve peaks, then 94 isn't needed.
I'm not trying to repeat Captain Bondo, just reinforce.
Cheers. Quote:
Originally Posted by Captain Bondo What it actually depends on is whether or not you are knock limited currently with 91. Many small-bore normally aspirated engines with pent-roof combustion chambers are not knock limited on 91.
In other words, ignition can be advanced to the point that makes best torque, and further advance results in power actually dropping off. If you can hit that point currently then you will not gain anything.
. | | |
| | |
09-13-2012, 11:32 PM
|
#42 | | Meow
Join Date: Dec 2010 Location: Burnaby
Posts: 1,286
Thanked 665 Times in 216 Posts
Failed 77 Times in 17 Posts
|
Hey, bumping an old thread, but I recently got a 2010 TSX V6, I was told to fill with premium unleaded fuel, the first week I got my car I went to the states and I filled up with their best fuel which is 92 octane, this week my gf borrowed the car and wanted to be nice and filled up with 89 octane thinking that's what it takes when I had 1/4 a tank of 92 octane from the states. So from my understanding the premium unleaded fuel is the 91 octane, is there anything I should be worrying about? and should I be using the 94 octane at chevrons or is the 91 octane fine?
| |
| | |
09-13-2012, 11:35 PM
|
#43 | | RS.net, helping ugly ppl have sex since 2001
Join Date: Jan 2005 Location: Vancouver
Posts: 9,594
Thanked 3,620 Times in 1,228 Posts
Failed 236 Times in 60 Posts
| Quote:
Originally Posted by Araaadi Hey, bumping an old thread, but I recently got a 2010 TSX V6, I was told to fill with premium unleaded fuel, the first week I got my car I went to the states and I filled up with their best fuel which is 92 octane, this week my gf borrowed the car and wanted to be nice and filled up with 89 octane thinking that's what it takes when I had 1/4 a tank of 92 octane from the states. So from my understanding the premium unleaded fuel is the 91 octane, is there anything I should be worrying about? and should I be using the 94 octane at chevrons or is the 91 octane fine? | 91 Octane should me sufficient for your TSX.
__________________ Quote:
Originally Posted by The_AK Or you meet some girl at the club, cum inside of her, find out shes only in grade 12, so you buy a Prada bag for her to make things right, she finds out the bag is a fake and decides to have the kid | Quote:
Originally Posted by RX_Renesis wtf did she get some bolt-on titties or what?
they look sooooooooooo much bigger than they were 2ish years ago. | Quote:
Originally Posted by nns I can't stand the sound of Mandarin either. Boo yow nee bey nee shing bo now noong gey shee mayo mayo mayo mayo mayo mayo mayo. | | |
| | |
09-14-2012, 12:29 AM
|
#44 | | Rs has made me the woman i am today!
Join Date: Jun 2006 Location: Burnaby
Posts: 4,074
Thanked 6,801 Times in 1,659 Posts
Failed 213 Times in 86 Posts
|
The internets if FILLED with "can my acura take 87/89"...and the answer is usually yes, but why.
Half a tank of the 89 won't matter. And like ^ said, 91 is plenty good.
| |
| | |
09-14-2012, 01:07 AM
|
#45 | | Where's my RS Christmas Lobster?!
Join Date: Jun 2009 Location: Burnaby
Posts: 858
Thanked 1,070 Times in 229 Posts
Failed 126 Times in 42 Posts
|
no stock car sold in north america requires 94 octane
| |
| | |
09-14-2012, 01:12 AM
|
#46 | | Meow
Join Date: Dec 2010 Location: Burnaby
Posts: 1,286
Thanked 665 Times in 216 Posts
Failed 77 Times in 17 Posts
| Quote:
Originally Posted by Shorn no stock car sold in north america requires 94 octane | Yea, I just want to know if 94 was a big improvement over 91, I just want what's best for my car , performance wise and engine life wise.
| |
| | |
09-17-2012, 12:12 AM
|
#47 | | RS controls my life!
Join Date: Jan 2003 Location: Langley
Posts: 799
Thanked 284 Times in 52 Posts
Failed 3 Times in 3 Posts
|
A lot of really good posts on this issue!
On a side note, 91 octane gas from the US has more detonation resistance then 94 octane from Canada. A lot of 91 octane tunes from cobb,diablosport,etc... will detonate on our 94 octane. This is a heads up for you turbocharged guys uploading pre-programmed tunes. Fortunately a lot of the newer vehicles have good knock detection and can retard timing to save your engine. But remember no 2 cars are identical. Always check your new tunes on a dyno where gains/losses and detonation can be monitored.
Back to your original question Mugen Evolution. Most late model naturally aspirated honda/acura engines can reach mean best timing a few degrees before detonation occurs. That means chances are you won't benefit from a higher octane fuel assuming your tune is correct.
__________________
S14 240SX: 2JZ swap/w BorgWarner S366 Turbo/hks264's/Haltech E11 / 626rwhp and 523rwtq @24 psi
Shawn
Last edited by Muskys SS; 09-17-2012 at 12:23 AM.
| |
| | |
09-17-2012, 02:15 PM
|
#48 | | Rs has made me the woman i am today!
Join Date: Jun 2002 Location: Vancouver
Posts: 4,461
Thanked 1,276 Times in 308 Posts
Failed 25 Times in 12 Posts
|
I've noticed that as well, I can not run the Cobb OTS 93 octane maps on our Chevron 94 gas without geting knocking. I even have knock when running the Cobb OTS 91 maps. In order to run knock free, I run about 2-3 degrees timing less than the Cobb OTS 91 octane maps. BTW, I'm monitoring knock using a MSD Dash hawk and Cobb AP to datalog.
Can anyone explain why our gas is so bad?
| |
| | |
09-18-2012, 02:23 PM
|
#49 | | Why'd you do that for?
Join Date: Sep 2007 Location: Vancouver
Posts: 1,399
Thanked 302 Times in 137 Posts
Failed 30 Times in 19 Posts
| Quote:
Originally Posted by Shorn no stock car sold in north america requires 94 octane | Evo X requires 93octane minimum, but can also run 91 or 87 if 93 is not available
| |
| | |
10-01-2012, 05:06 PM
|
#50 | | Wunder? Wonder?? Wander???
Join Date: Jul 2009 Location: Vancouver
Posts: 219
Thanked 93 Times in 19 Posts
Failed 12 Times in 5 Posts
| Posted via RS Mobile | |
| | | |
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off
| | |
All times are GMT -8. The time now is 12:20 PM.
|
You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
The banners on the left side and below do not show for registered users!
