MuMan
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Re:E85 Fuel to Caltex
Tuesday, August 30, 2011 3:29 AM
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The ct26 doesn't flow on the exhaust side very well at higher boost, due to the twin entry design and tight exhaust housing, and manifold pressure builds quickly after ~10psi. Any increase in exhaust flow isn't going to help with a stock exhaust. You'll probably see 1 or 2 psi increase with your new exhaust, and better spool. At the other end of the scale, getting the intake down low into the side vent will drop intake temps considerably. A heat shield will definitely help to keep radiated heat away from the pod filter, but most pod filters I've seen on gen2/AFM's mount the intake high and behind the fuel filler pipe, ingesting air at engine bay temps. Lower intake temps will result in lower charge temps, and combined with lower combustion temps (E), should be reflected at the manifold and turbo.
"Have you ever noticed when things get set in motion, the heavy end wants to go first."
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jdmr288
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Re:E85 Fuel to Caltex
Tuesday, August 30, 2011 8:03 AM
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I ran out to bunnings and bought some corrogated aluminium pipe large enough to fit my fist in it. The apexi pod I run sits high as Muman said...so I've ziptied the pipe to the vent mesh and routed it just under the apexi heat shield on the filter and ziptied it there too. Running a DC 9" fan off the sidemount which runs all the time and also the twin 11" SPAL fans. Already with E85 in this fill I've noticed alot smoother driving when on a cold engine - I don't do this alot but it was raining tonight and just started up and drove off and it was fine, no surging etc. I reckon if your already running a 3" dump pipe then a less restrictive exhaust won't be that noticeable. Plenty of weight and restriction in the stock DP.
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MRTurbo
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Re:E85 Fuel to Caltex
Wednesday, August 31, 2011 3:29 AM
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I might look at doing something similar because, my pod is pretty high and has no shield or anything attached to it. This "corrugated aluminum piping" sounds interesting and do they make it large enough to cover the whole pod filter or have you just kinda aimed the end of it towards it? If you could get a photo mate that would be good. The 3" DP did make a pretty noticeable difference in how early it spools compared to stock and the motor just feels stronger everywhere. That being said, an exhaust is only as good as its biggest restriction and mine is a dodgy press bent "cat back" which snakes around all over the place - probably no bigger than 2 1/4". I'll be able to really see how restrictive it was after I get my new one fitted very soon. :)
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i
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jdmr288
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Re:E85 Fuel to Caltex
Wednesday, August 31, 2011 4:09 AM
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I want to get a quieter exhaust than the BLitz Nur Spec I have on it now. It's just far too droney everywhere in the rev range and I'm over setting off car alarms - it was fun for a while. It is probably one of the most unrestrictive exhausts on the market for the SW20 though, besides the 2 1/2" inlet from the dump, which opens up to 3" almost immediately after this joint. Pic of said pipework.  Uploaded with ImageShack.us
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MuMan
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Re:E85 Fuel to Caltex
Wednesday, August 31, 2011 6:47 AM
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If it helps guys, you can get adaptors for both the apexi and AFM to take a 3" silicon hose coupler, and with a 3" alloy or stainless bend off ebay, you should get down close. The apexi adaptors are fairly common, but the one for the AFM you need to chase, or get one made.
"Have you ever noticed when things get set in motion, the heavy end wants to go first."
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MRTurbo
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Re:E85 Fuel to Caltex
Wednesday, August 31, 2011 7:01 AM
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Okay let me get this straight... So where the pod filter would normally fit on to the AFM adapter (up high), shove on a silicone coupler then to that attach another metal pipe going down, then on the end of that is the pod filter?
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i
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MuMan
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Re:E85 Fuel to Caltex
Wednesday, August 31, 2011 7:20 AM
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Well basically, but depends on the type you have, apexi's point the filter in the wrong direction for instance. Better to fit a 3" hose adaptor directly on the AFM then run the 3" bend down as you said, with a bracket & hose clamp securing things.. Most cold air intakes seem to be made for the gen3, I don't think there's an off the shelf version for the AFM, if there is KO racing would probably have them. Don't have a pic of the AFM adaptor.
post edited by MuMan - Wednesday, August 31, 2011 7:34 AM
"Have you ever noticed when things get set in motion, the heavy end wants to go first."
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MRTurbo
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Re:E85 Fuel to Caltex
Wednesday, August 31, 2011 11:26 PM
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Well my AFM adapter (custom) is at a 90 deg bend so it's already pointing more towards the front of the car/intake vent. I think a small 3" elbow would do it, so then the tip of the pod would be lower and pointing down next to the vent? I'll have a look at KO racing too. I still don't see why there are no CAI kits available for the gen2, as there seems to be a lot more around than gen3's... UPDATE: Phoenix Power Departure II Pro exhaust installed and the results are astounding!! I lost my 'fuel cut virginity' the other (cold) night winding out 3rd gear through the hills! damn this thing is hungry for more revs and boost now - so much more fun! :D
post edited by MRTurbo - Monday, September 12, 2011 6:57 AM
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i
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nuk1ear
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Re:E85 Fuel to Caltex
Monday, September 12, 2011 7:05 AM
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anyone wanna talk about E85 again? lol http://www.mr2oc.com/show...9&page=3&pp=30 Anyone used it enough to check for the problem in that thread? Seems like its a quality issue with E85 suppliers. Wonder if ours here in aus might be giving the same issue? E85 is much newer here, not many people use it.
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MuMan
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Re:E85 Fuel to Caltex
Monday, September 12, 2011 9:41 AM
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That issue appears to be confined to certain users, and certain outlets, without any real consistency to enable a definitive cause. Most users report no problems whatsoever, while a select few have a serious injector/port fouling problem. First off, this is 100% E85, and US E85 until the recent ban, used the ether additive MTBE as opposed to AU production and MMT. I'd suggest that considering the widespread use of E in the US and EU, there's little evidence of this problem generally occuring, and I'd be inclined to think it's more from a heavily contaminated fuel tank and components, stale degraded fuel, electrolysis or some similar cause. It certainly doesn't apply to splash blends of E, as the accepted remedy seems to be to run a couple of tankfulls of ULP, in most cases it's encountered. It may even be the result of phase shift in the fuel tank as a result of water contamination. It seems that levels as low as .5% water contamination can cause phase shift and resultant layering, and this can compound itself by continually topping up the tank, rather than draining and flushing with ULP. There's also reports of the possibility of some stations storing E85 in tanks where previously ULP and diesel were stored, leaving a black sludge residue on the bottom of the storage tank, and naturally disolved into solution by the E85..then drops out of solution at the injector nozzle. A more concerning aspect where US fuel is concerned is the addition of 15% ULP+ in winter grade E85. I understand the additional ULP is only 60 RON, probably as a result of cold weather additives, and how that would impact an average tune. dropped to ~97/98 RON. You'd have to run dual tunes basically.
post edited by MuMan - Monday, September 12, 2011 2:24 PM
"Have you ever noticed when things get set in motion, the heavy end wants to go first."
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MuMan
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Re:E85 Fuel to Caltex
Thursday, September 15, 2011 2:03 AM
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Came across the AFM adaptor for CAI if anyone is interested..KO Racing.
"Have you ever noticed when things get set in motion, the heavy end wants to go first."
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MuMan
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Re:E85 Fuel to Caltex
Tuesday, October 04, 2011 12:41 AM
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Been having some good results here with this, well after ditching a 50/50 mix, then also 40/60 and now tuning for 30E/70. I've come to the conclusion that is about the limit where a blend is concerned, as the combined benefits of the E compound knock tolerance beyond the actual calculated value, then start to dwindle as you get closer to the E as the dominant fuel, and get locked into the actual RON/MON rating of the E85. Also ditched a comparison ULP 98 tune on the second set of maps, and settled for a safe street tune, as there's simply no comparison. (don't think of running a 30% blend on a stock ECU, it's well over the power limit of the stock injectors!) No evidence of E problems, either RON consistency, contamination or fuel system damage, and the car sits all week with a full tank. Anyone running 10-20%E on a JDM stock ECU - you can raise static advance to 12deg BTDC safely to gain more performance, provided your not at the limit of your stock injectors. Anyone running a APFC 10%E will keep any knock issues in check and allow you to add in more advance for torque and power, provided your EFI/AFR's are in check.
post edited by MuMan - Tuesday, October 04, 2011 12:46 AM
"Have you ever noticed when things get set in motion, the heavy end wants to go first."
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jdmr288
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Re:E85 Fuel to Caltex
Tuesday, October 04, 2011 12:56 AM
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Would there be more of a benefit in running E in a later model car not using an AFM? Are the modern fuel systems able to cope with the added ethanol?
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MuMan
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Re:E85 Fuel to Caltex
Thursday, October 06, 2011 7:49 AM
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Good question.. The primary load sensor, either AFM or MAP won't make any difference as there's no change to metered air flow, it's all happening in the combustion chamber. Any engine that's knock limited will show some benefit, but more so forced induction or high compression engines. The reason it works so well on a 3SGTE is because of the stock ECU timing curve making the engine excessively knock limited on ULP98, and also the dual Ign/EFI adjustment strategy when low level knock is detected by the ECU.. ie adding fuel and reducing advance. Take away the knock, and it simply doesn't happen. On top of that the ECU also adds fuel to limit thermal efficiency (edit), and reduce combustion temps. So you can see where the gains are, so any similarly designed management system would see a similar level of performance gains. As for being E proof, things aren't quite so clear. There's been a systematic attemp to 'future proof' cars over a number of years with ethanol being an ever present certainty, but unknown implementation date, no doubt to make older cars backwards compatible with ethanol enhanced fuel, and newer ones compatible with higher levels of E, which is already on the table (E15/E25). What level is safe, and what level will cause problems? no idea. You can only go on reliable results from actual users as most concerns seem to be unfounded. When you look at cars, including 2's, that have been converted to E85 and have been running without major issues for several years on basically stock fuel systems, you get some insight into what are real issues and what's not. Your already running E in your ULP98 (5%), in the US 94 (10%), and soon you just won't have any option but 10% in anything. Trouble is with pump fuel the MON and O2 content is mandated and capped. Suppliers use the E content to raise the RON rating back to the advertised level, so basically 98 + 5%E is still 98, same as they've done with 91 E10. On top of that, blending by the suppliers instead of the oil refineries is a worry as who's to say the E content isn't likely to exceed 10% (there's money in E). At this point in time, splash blending E85 into ULP98 avoids most of the issues, but down the track things don't look quite so straight forward..one thing is for sure, E is here to stay.
post edited by MuMan - Saturday, October 08, 2011 7:35 AM
"Have you ever noticed when things get set in motion, the heavy end wants to go first."
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MRTurbo
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Re:E85 Fuel to Caltex
Thursday, October 06, 2011 11:44 PM
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Okay, I got 90% of that but I don't really understand how adding fuel limits boost - I thought that was done with the wastegate? Re: E in ULP98 - I don't think here in SA, that is the case. Doesn't there have to be signage by law stating the amount of E on the pump? I'll be dammed if there is any in BP Ultimate too (which I prefer to use). But in NSW/QLD things are probably different. Also interesting note that in my manual for my Honda CBR600 it says you can use up to 10% ethanol... Whats MTBE anyway??
1990 SW20 GT 3S-GTE Targa 2001 Honda CBR600F4i
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