Supercharged...???
- Thread starter NoliWan
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ToolmanJohn
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Not many here
There are a lot of 4th gen owners, and as such only the 4.7 L V8 had a S/C avaialble for a short time. My understanding is it is no longer available (don't know why). There is as yet no S/C option for the 4.0 L V6, although the new X-Runner sport pickup will have the same engine available with the S/C option.
Personally, I think if I leave my foot on the gas long enough, the truck will go faster than I want it too. Since I bought an SUV, and not a sports car, I am not overly concerned with 0-60. If it's under 9 seconds, that's plenty good enough for the road.
There are a lot of 4th gen owners, and as such only the 4.7 L V8 had a S/C avaialble for a short time. My understanding is it is no longer available (don't know why). There is as yet no S/C option for the 4.0 L V6, although the new X-Runner sport pickup will have the same engine available with the S/C option.
Personally, I think if I leave my foot on the gas long enough, the truck will go faster than I want it too. Since I bought an SUV, and not a sports car, I am not overly concerned with 0-60. If it's under 9 seconds, that's plenty good enough for the road.
NoliWan
New member
Don't get me wrong... I understand your personal point of view...I'm not out to beat or race anyone... Just like having the added horsepower & torque when needed... You be surprise how fast this truck can actually run but not advisable being it's a SUV... and we all know they have limitations... I to am a safe & responsible driver not someone looking out for cheap thrills...!!!
Koz
New member
For me, the more power the better, but it has to be reliable power. I currently have a PreRunner with a TRD blower. I've managed a best 14.98sec. quarter mile, after removing the stock 31" tires and many runs. I have a nine second motorcycle so drag racing a 15 sec. truck/car seems like drag racing in slow motion, even though its pretty respectable. I'm waiting for a limited 05 V8 4Runner to replace my wife’s Avalon (which is a GREAT car). If a TRD blower becomes available I will get one. From what TRD claims there are no plans to supercharge the VVT-i V6/V8 engines. Seems they have experienced problems with the iForce V8 that they have not yet resolved.
I ALWAYS have the need for speed, more power, turn and burn. There is definitely never enough power!
Koz
I ALWAYS have the need for speed, more power, turn and burn. There is definitely never enough power!
Koz
NoliWan
New member
Loki said:
I havent' done any quater mile time runs but I'd like to just to see what time my rig can come up with, but I did have it dynoed-- I get between 213 RWHP to 220 RWHP so at the crank that would be much higher... Here is my dyno results---Before & after...
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NoliWan
New member
Koz--
I know before I did my fuel mods-- I was running very lean-- I'm not too sure what my Air/fuel ratio should be -- The dyno technician did the adjustment to my fuel trim for I am not experience in doing this kind of tuning-- I took it was oK since they are the pro's in this kind of stuff... What should it be... any info is greatly appreciated...
I know before I did my fuel mods-- I was running very lean-- I'm not too sure what my Air/fuel ratio should be -- The dyno technician did the adjustment to my fuel trim for I am not experience in doing this kind of tuning-- I took it was oK since they are the pro's in this kind of stuff... What should it be... any info is greatly appreciated...
On any forced induction vehicle, I'd be shooting for 12.5:1.Seems the issue TRD had with the ecu was again, running lean!! I spoke to a tech who was familiar with the issue-seems the v8 would throw a rod on occassion with the lean condition and the supercharger-not something I'd want on a 40k limited!! I wish TRD would bite the bullet and sub the work out to get done and done correctly. Its been since 1997 with the old supercharger, and they still can't get it right.
24runners
New member
I have had the TRD SC on my 96 SR5 4x4 for about 20k miles...it was put on at 110,000 miles and I've never had any problem out of anything...Luckily I haven't had any pinging problems or tranny problems...its GREAT and I couldn't imagine going back to stock 
The rest of my 96 is stock (except for a drop in K&N filter).
As soon as the sc's are available for the 05 4.7 v8, I'm definitely getting one...
The rest of my 96 is stock (except for a drop in K&N filter).
As soon as the sc's are available for the 05 4.7 v8, I'm definitely getting one...
I had an 2k 4runner that was supercharged, and I agree, it was great, and I couldn't imagine not having it- until I was hit head on and the truck was totaled. I now have the 04 limited, and I am waiting for the supercharger to be rereleased. I would not expect it to be available for the 05 which has variable valve timing. In order to have forced induction on an engine like that, it would more than likely require the vvti to be disabled, since the valve overlap would actually cause the boost to be pushed out the exhaust valve. I'm not sure how much overlap would be present in this engine, so it might be feasible, but in the case of my Porsche 968, we needed to disable the variocam feature to get the engine to behave with a turbo. I'm not holding out much hope for those idiots over at TRD. If they can't get the regular v8 to work, can you imagine the mess they'd create with the vvti! I remember dealing wit TRD in the early 80s for JDM stuff I had on my series 1 celica, and you could talk to the same person every time, and you could understand them, seems since they went big time, customer service is in the crapper, customer service people hardly speak understandable english!
24runners
New member
I'm not too familiar with the inner workings of the vvti V8 yet...but I dont see how the valve overlap would be a problem...most cars with a version of vvti run forced induction just fine....my brother's 05 Legacy 2.5GT awd Turbo has Subaru's version of vvt-i and it runs a Turbo just fine. Also, I was under the impression that there were already TRD SC's available for other Toyotas that had vvti...like Camry's and Solaras. Am I completely wrong on this??
That was what I heard about the rods, which I thought was a little odd, but the source is a TRD employee.
I'm not sure about the vvti in Toyotas, I thought I said that, maybe not, but I do know it is an issue in some cars, like my 968. Apparently, on some vehicles, the overlap causes the exhaust valve to be open during the beginning of the intake cycle, and the boost was being pushed out the exhaust valve for a moment, which caused poor performance. Thats a simple explanation.
I'm not sure about the vvti in Toyotas, I thought I said that, maybe not, but I do know it is an issue in some cars, like my 968. Apparently, on some vehicles, the overlap causes the exhaust valve to be open during the beginning of the intake cycle, and the boost was being pushed out the exhaust valve for a moment, which caused poor performance. Thats a simple explanation.
Koz
New member
The 14.7 : 1 ratio is for perfect conditions on a normally aspirated engine. You would have a hard time trying to keep that ratio at all rpm under variable conditions, which is why most tuners map on the richer side, to avoid a lean condition. If you have power added (turbo-supercharger, nitrous) you MUST tune it fat. I'm thinking that the ECU problem with the TRD V8 blower caused a lean condition and that's where some internal engine parts failed. The fix was probably to richen the map and avoid having to change hardware (higher fuel pump volume, larger injectors, etc).
Koz
Koz