Lez Posted January 12, 2005 Share Posted January 12, 2005 Hi everyone, I thought I’d come and join you now that I’ve just traded my MkIII turbo in for an import MkIV NA. I plan to try and go to as many meets as possible and contribute to this forum as I did to smaller but very friendly MkIII lot. This is my second MkIV, but unlike my previous one, a Targa, this one comes with some mods. I should declare them to my insurance but they will ask me what the power increase is, so I need your help, can someone give me a ballpark figure for these mods; HKS Super Mega Flow air induction kit – 1504-ST024 HKS Muffler – 3203-ST011TU Taken from the mass of Japanese fitting instructions found in the glove compartment. The car also has; TEIN type HR springs & shocks F & R top suspension cross braces 18” alloys 235/40/18 & 265/35/18 which I know doesn’t increase power but are non-stock items. Any help would be appreciated, thanks. Quote Link to comment Share on other sites More sharing options...
hadyn Posted January 12, 2005 Share Posted January 12, 2005 about 10bhp max??? Quote Link to comment Share on other sites More sharing options...
Jake Posted January 12, 2005 Share Posted January 12, 2005 yeah, max. Might be slightly higher if he refitted the stock airbox and filter. Quote Link to comment Share on other sites More sharing options...
JamesG Posted January 12, 2005 Share Posted January 12, 2005 I'd either say a very very low percentage, or no increase at all. There's no way the insurance company can verify what you say, so you might as well pay as little as possible. I had loads of insurance quotes and I think only Direct Line asked about actual power increases. Quote Link to comment Share on other sites More sharing options...
hadyn Posted January 12, 2005 Share Posted January 12, 2005 do na and tts suffer from drawing in heat then if you fit an induction kit, usually resulting in a loss of power rather than a gain?? Is it better to keep the standard box and fit an uprated panel filter? Quote Link to comment Share on other sites More sharing options...
Jake Posted January 13, 2005 Share Posted January 13, 2005 do na and tts suffer from drawing in heat then if you fit an induction kit, usually resulting in a loss of power rather than a gain?? Is it better to keep the standard box and fit an uprated panel filter? Depends who you ask. Surprisingly, the folks that sell them say they're great! Chris Wilson recommends the stock airbox and filter for superior filtration and more than adequate airflow up to at least 500bhp. Also, as you mentioned, the stock one doesn't suck up so much of the heat from the engine bay. Quote Link to comment Share on other sites More sharing options...
Lez Posted January 13, 2005 Author Share Posted January 13, 2005 So I should either convert back to a stock filter intake (which I don't have) or custum build a cold air intake/shroud for the HKS. So what I originally told the insurance company, that it had a different filter with no power gain, was intuatively correct. Quote Link to comment Share on other sites More sharing options...
Jake Posted January 13, 2005 Share Posted January 13, 2005 So I should either convert back to a stock filter intake (which I don't have) or custum build a cold air intake/shroud for the HKS. Up to you mate. It's not doing much good but then it's probably not doing much harm either. Some folks buy them for the sound. I'm converting my VVTi back to Std airbox this weekend. So what I originally told the insurance company, that it had a different filter with no power gain, was intuatively correct. Yeah, most likely. By the way Lez, there's no apostrophe in "Toyotas" (in your Sig) Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 13, 2005 Share Posted January 13, 2005 Building your own cold air box/heatshield is an easy and cheap way of improving matters and personalising your car Those green mushroom filters aren't highly thought of by some people, seems like they don't actually filter much - I've heard of two Skylines that ingested so much grit through these that the turbos failed and one of them had serious engine wear as well. I've not heard of similar problems on a Supra though, so /shrug -Ian Quote Link to comment Share on other sites More sharing options...
lust2luv Posted January 13, 2005 Share Posted January 13, 2005 Welcome! Jeez, you've owned a mki, mkii, mkiii and mkiv?! That must make you pretty much unique on here! Quote Link to comment Share on other sites More sharing options...
Nick Posted January 13, 2005 Share Posted January 13, 2005 I had the HKS filter removed a few months ago and replaced with the standard box. During the end of summer the car felt much better, especially after sitting in traffic. My car didn't like the heat, felt very sluggish. Now it's winter it doesn't really feel any different, just a lot quieter. I'd just tell them that the mods are cosmetic, i.e. fitted to give a nice noise. Quote Link to comment Share on other sites More sharing options...
Lez Posted January 13, 2005 Author Share Posted January 13, 2005 Welcome! Jeez, you've owned a mki, mkii, mkiii and mkiv?! That must make you pretty much unique on here! Thankyou just2juv, something to do with my age (44) I suppose. Jake, is sig better? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.