Everyone happy with performance?
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My experience with headers is that you don't notice a big improvement after putting them on. It's AFTER taking them off and going back to stock when you really notice a difference. Of course, my experience only applies to domestic V-8's.
Brock, I remember reading your posts. I've found a way to justify the costs.
Better to have a spare set of manifolds you know are good if you're going to all that trouble. And if you don't have a spare set of manifolds why choose to buy the inferior part if you need to make a purchase?.......... At $150 for a couple of dyno pulls and ecu tweeks, its quickly adds to costs of what started as a cheap upgrade. Maybe it's a good idea after changing the intake and exhaust to ensure one is squeezing every last drop out of the motor.
Moooo-
My response to your first post, is that K&N filters seem (from my reading) to have a problem with discharging a very very thin film of oil that can tamper with the MAF. Thusly, causing some issues with performance or reliability. I'm not too familiar with the MAF or sensors for intake but I do know them to be extremely sensitive and tricky.
An example, I had my airbox out for 6 hours last weekend during an HID conversion for the headlights. After putting the car back together I had serious problems with the LX470: it wouldn't stay running below 1,500rpm, it had trouble starting, it was kicking back several warning lights, etc.
Turns out there was some moisture buildup on the intake and airbox that caused one of the intake sensors to go screwy. It was temporary but how finicky is this? I live in California too so imagine 55 degrees and overcast giving your car problems.
My response to your second post: I'm definitely on the fence as to the value of buying a chip. I was really trying to help Brock see how the header upgrade, for me, should be part of something bigger and timed when the costs justify themselves a bit. Also, from my hot rodding days, I spoke about some of my knowledge regarding ECU's/chips and how to use them best. I was speaking more to the point of visiting a specialty shop. Such as a local tuner or something. No way do I think and Dealership will tune your car's electronics.
In general, it seems there's little that can be done to this motor to improve performance. What I see as options for me are one of only a couple things: a big bore rebuild when the motor dies (or when hell freeze over), a supercharger (if I'm lucky enough to find all the specs/parts to keep the costs reasonable - around $5k or less), or lastly upgrading several parts that, when combined, adds up to something more substantial (like headers, intake, ECU that's tuned after install).
Waiting til the Jan 1.
Fingers crossed.
Thanks for the update. I think they have sold just under 40 sets of these, with no major complaints and lots of happy customers. For the $600 bucks I have to say this was a good deal, and a much better solution to the cracked header syndrome. I hope they continue to produce these, since I know it will be a problem for most if not all LC's in the future.Got the LX back from the mechanic today. Install went smooth, only heartburn was getting the studs out - vermont winters caused virtually all of them to sieze. I'd asked them to order a complete set, so they're all new now. Also put in new 02 sensors. They did not have to pull the steering column. They were very impressed with the quality of the headers - they were skeptical at the start - but really had great things to say about them after the install.
Can't yet say whether performance change is noticable or if gas mileage will improve, but as one earlier poster suggested, it is extremely quiet again. The leaky manifold was really causing a racket and it's great to have that gone.
Thanks for the update. I think they have sold just under 40 sets of these, with no major complaints and lots of happy customers. For the $600 bucks I have to say this was a good deal, and a much better solution to the cracked header syndrome. I hope they continue to produce these, since I know it will be a problem for most if not all LC's in the future.
Dang, how much did they have to jack the engine to not have to remove the steering shaft!?! After doing the install myself, I can't imagine there being enough room.
Now, how do we get more air into the engine? I am thinking a duct under the passenger light that flows to the deck plate mod so it can be back to stock with ease. Thoughts?