How-To-Guide (TRD CAI) Installation
- Thread starter TOYSTRY
- Start date
TheWraith
New member
Now if we can just get someone to test 87 vs 92/93 octane
I say at the most maybe 4 more whp...
Randyman...
New member
The funny thing is someone here (don't have time to search for it now - at work) posted a supposedly "official" spec sheet that showed something like 285HP with 93 Octane (so maybe 7-10WHP real world ?). Probably with 100% gas, too (0% Ethanol).
I also have my skeptical doubts on this, but in all honesty I believe 93 Octane will be of more appreciable benefit than CAI and/or aftermarket Cat-Back noisy exhaust with 87 Octane
(and probably about the same total cost in the end)Your pioneering desire to get statistical data on the 5th gen's engine mods will no doubt get others involved with more testing IMO. Might even get me to try, but I'd have to run 87 Octane for awhile (probably not gonna happen)...
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TheWraith
New member
The funny thing is someone here (don't have time to search for it now - at work) posted a supposedly "official" spec that showed something like 285HP with 93 Octane (so maybe 7-10WHP real world ?).
I also have my skeptical doubts on this, but in all honesty I believe 93 Octane will be of more appreciable benefit than CAI and/or aftermarket Cat-Back noisy exhaust
Your pioneering desire to get statistical data on the 5th gen's engine mods will no doubt get others involved with more testing IMO. Might even get me to try, but I'd have to run 87 Octane for awhile (probably not gonna happen)...
Only reason I'm doing this is to make sure its making or adding power. Kinda like Power to Dollar ratio. And see where it makes power. If I lose low end power for more top end... I will most likely get rid of it...
We have to be honest here... these are 4wd vehicles and are used for off road expeditions ( thats my plan for this rig) ... these vehicles arent made for speed or drag racing. So most of the time we'll be spend our times in the low end of the rpm band. If any mod I put on my rig kills my low end torque and/or horsepower its going on the for sale thread for sure...
Randyman...
New member
Agreed - Low-end torque losses for minimal mid-range HP gains in a truck are like shooting yourself in the foot for fun.
I'd think the benefits of 93 Octane would be appreciable from idle through redline on both torque and HP. We just need to track down that spec sheet that mentioned the 285HP I thought I recalled, or have someone do a dyno after like 5 tanks of 87 vs like 5 tanks of 93.
DjSamthrax
New member
I'm noticing a significant improvement in fuel economy around town compared to when I did not have an intake and I'm currently running 92. We're talking four to five miles per gallon.
Randyman...
New member
TheWraith's exciting Dyno pulls should give some fairly unequivocal results IMO. More power (and where that power is made) should also translate into better MPG at equivalent engine loads.
Were you running 92 before you added the intake?
I'd have to assume if a simple intake mod would get the T4R to 25+ MPG it would be a stock offering from Toyota? CAFE standards and all that jazz...
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1engineer
Moderator
I'm pretty sure that you need to run several hundred gallons of 91 through your tank before any effects can be measured, let alone felt. I do know the timing will change but based on documentation on the LC from other countries it is a very slow process and as soon as a different grade is introduced then it starts the process again.
On the dyno run I hope you see 10 HP gain. I doubt it but hey, who knows?
On the dyno run I hope you see 10 HP gain. I doubt it but hey, who knows?
DjSamthrax
New member
I have been running 92+ since mile 1.
I was getting 13-14 around town and since the intake it has shot up to 17-18. Healthy mix of city and highway and by no means babying it. Intake sounds really good and 2 and 3 gears feel like they have new tricks to do.
I was getting 13-14 around town and since the intake it has shot up to 17-18. Healthy mix of city and highway and by no means babying it. Intake sounds really good and 2 and 3 gears feel like they have new tricks to do.
Randyman...
New member
63K miles worth of 92/93 over here
I'm a bit hesitant to experiment with 87 at this point, but maybe a baseline Dyno of my T4R would tell us something w/o any direct comparisons against my own motor?I thought the ECU was kind of like Ethernet TCP's "Slow Start" thingy where it starts off conservative and then slowly advances timing until pre-detonation (equivalent to TCP connection saturation
), and then it retards slightly until clean. I guess that could take hundreds of gallons to happen, but it might happen quicker under more aggressive WOT driving styles?Speaking of WOT: It's time to hit the highway for my drive home - Later!
TheWraith
New member
You should be able to speed up this process by pulling the battery to reset the ecu...
sandcrawler
Senior Member
this LC link speaks to the point: Welcome to Land Cruiser Owners On Line63K miles worth of 92/93 over here
I thought the ECU was kind of like Ethernet TCP's "Slow Start" thingy where it starts off conservative and then slowly advances timing until pre-detonation (equivalent to TCP connection saturation
the only place i've ever seen the 91+ octane HP/TQ boost "documented" is on the 1GR-FE Wikipedia page, but its official source is not provided, unfortunately.
alexb
New member
Not bad numbers. What kind of dyno was it? Dynojet or mustang? What gear were the runs done in? Did he give you print offs to compare the full RPM range once you do the new ones?
TheWraith
New member
its a dynojet copy ...
we originally did them in 3rd gear but for some reason it would kick down to 2nd gear. And couldnt get a good reading. So we did it in 2nd gear ...
I dont think soo but he'll give me a data sheet each time soo I can compare each run per rpm ...
alexb
New member
Interesting. That kind of explains the high numbers. 220whp on a 4Runner would be pretty impressive. 4th gear is the 1:1 gear ratio, but I imagine getting a big ass SUV up to those speeds on a dyno could be a little sketchy. :scared: Just as longs as everything is done in 2nd we should hopefully see some consistent results.
TheWraith
New member
from personal experience mustang has always show the lowest numbers. But I know theres a 4wd european dyno in OC thats a dream crusher, then theres the mustang dyno, then its the dnyojet and then there the dynapack ...
dynojet has always been the dyno I preferred ... Closer to real horsepower rating than the mustang.
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Randyman...
New member
3-Week status bump. Any updates on your CAI and/or Cat-Back Exhaust purchases or installation?
TheWraith
New member
Nothing yet ... as I am one of the people in the oil industry thats out on strike and have no funds coming ... Holding my money close to my pocket right now.
I'm hoping to get back to work soon. I should have my CAI delivered by next week though but wont be dyno'ing till I get some income coming back in.
I'm hoping to get back to work soon. I should have my CAI delivered by next week though but wont be dyno'ing till I get some income coming back in.
Randyman...
New member
Damn - Good price indeed! :thumb3:
With bated breath we wait
With bated breath we wait
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