Quick Poll

[HushH]

Got my car in for tuning and need to decide whether to go with the LPE intake or not. I know there's questions as to whether it really adds much if any over the stock but I'd just like to see a quick vote. Would you spend the $300 on it?

[trukk]

I voted yes.

I found modest gains ( http://www.cadillacforums.com/forums...ore-after.html )

I certainly like the sound difference.

It does come with some downsides though. You have to check the connections fairly often, to make sure all is well (sucking unfiltered air into the engine is a no-no). Also occasionaly you may get a CEL, which will require the MAF to be cleaned, to alleviate (i've had this happen once, in about 14 months w/ my LPE.) I just carry a screwdriver, and a can of contact cleaner in the trunk spare tire well, in case (it takes about 5 minutes to disconnect, spray, and then reconnect it.)

I find this mod worth it. Some may not.

-Chris

[HushH]

Thanks much for the info. I did a couple searches but somehow missed your post. That's exactly what I was looking for. This may be a dumb question, but do you know what the reason is for the drop-off in lower RPMs?

[trukk]

Originally Posted by HushH

Thanks much for the info. I did a couple searches but somehow missed your post. That's exactly what I was looking for. This may be a dumb question, but do you know what the reason is for the drop-off in lower RPMs?

Not sure why. I guess the airflow rate is changed enough, that it alters the curve. I'm sure one of the engineers amoung us could explain it. <insert technobable here>.

Having more power under the curve is usually considered more desirable, than having the peak power, however in our application, I'd rather have more up high. Having a bunch of lowdown power will accelerate the demise of your diff, whereas having that highend kick, puts less strain on the drivetrain.

In the grand scheme of thing though, the gains/losses from this mod are pretty small, so you not going to really 'feel' that much with just it alone. I did it as I'm slowly adding mods, and they eventually do all add up. 5hp here, 10 there, 7 somewhere alse, all add up (some will be cumulative, some won't). You definately will be able to feel that extra 20 - 60 Hp that you get from the basic boltons + tune.

I'm currently at 359 rwhp, on a dyno I trust (the dyno used in my link above, I did not have a great deal of confidence in.) I didn't have a stock baseline from that dyno, however a stock '06 baselined one of the times I was there, and put down 340, so i'd expect my '05 ls6, was probabaly somewhere between 320 - 340 (with closer to 320 being more realistic). Either way, that puts my boltons + tune at between +20 to +40 additional rwhp.

my current boltons are:
- Corsa Exhaust
- Random Technology High Flow Cats
- kaTech Ported Throttle Body
- Stealth V Free Flow V (FFV v. 2.0) intake pipe (replaces the stock plastic 'sqeeze pipe'. Note: I bought this 'used' for cheap. It is no longer offered for sale. There are links on here, for how to make your own.)
- LPE CAI.
- Tony's Corvettes dyno tune.

My humble opinion, your milleage mary vary, etc. etc. etc.

-Chris

[BowenCT]

I voted yes, but here's why:

If the car was going to remain dead-stock, I would say it probably isn't worth spending the money on the LPE (or any other) intake. However, if you intend on doing even basic mods (ie: exhaust, tune, etc.) then the LPE intake will most definately improve your car's ability to inhale. Just my $0.02.