RAPTOR SUPERCHARGER FOR LIB 3.0

[Tradewind]

Hi Paul

I have one question for you in order than i can answer some of your questions, which state are you located in? The answer varies dependant upon state legislation, and I know Qld well and a couple of the southern states. WA is better than it was and SA is impossible

[smythie]

Unless he's moved, Paul is a Sydney-sider

[twinturbosubaru]

Correct

[Tradewind]

TTS - here we go

How does the SC kit go with ADR's ?, you mentioned in a previous post from last year that you insure with Shannons, I do also, and they are happy to cover mods which are approved and engineered, being that a SC increases output power which in turn could mean an engineers certificate, have you had this problem and if so what was the result ? I personally havent had this problem however your vehicle must comply with whatever your state TPT department reqires. If you are thinking of going down the road of engineering an SC system on your vehicle - leave the exhaust stock, I say this because it will allow you to cruise through any emissions tests. NSW - requires an engineers inspection and certification. Regarding Shannons, I understand there are 2 conditions on which they will insure your vehicle, one is for a certificated vehicle and the other is not, call them and they will spell it out to you. In the second instance its "something like" - so long as the modifications didnt contribute to the accident then they cover - get the info from them, its their business and your car that needs insurance.

The EZ30R's have a tendency to hesitate around 1500RPM on acceleration, westminst has been tuning my car for a while now for improved drive-ability and I'm holding him up at the moment (another story), but this hesitation seems to be common as I've seen it on other cars a few times now. Does running the SC kit help with this hesitation at all ? or perhaps others who have fitted the kit already may be able to answer that ? I spent some time today checking for this hesitation that you mention, I cant replicate it in my car at all. The first thing I noticed was the difficulty of even taking the engine down that far in rpm, there is nearly no driving condition apart from idling around shopping center carpark that gets the 3.0 down that far. Running at that rpm and below also brings risk of cam position error from my experience. I would say the SC system will not correct this for you.

When I bought my car I did a full service on it, injector clean, MAF sensor clean and a hard drive then dynoed it, the result on a non-tuning dyno (read no need for high readings) was 129.8kw ATW, so I have a good benchmark to work from. Since then I have added an XFORCE exhaust system which was a good addition, however retaining the centre muffler is a must to keep back-pressure and torque in check. I cant say for sure if center muffler is needed for the parameters you mention, I know that BJ (forum member) has an entirely modified exhaust system and at this time I cant recall him finding a fall in tq due to this.

[twinturbosubaru]

Thanks for the comments.

The hesitation is when taking off from a standing start, not a quarter mile start , just normal like taking off from a set of lights, there is a slight hesitation around the 1500RPM mark, it's quite noticeable usually, perhaps you are lucky and don't have it, I can't recall if you have a series 1 or 2 GEN4, mine is series 1, perhaps series 2 doesn't have it.

Also sometimes when idling at a set of lights or whatever with the A/C on and the compressor kicks in it nearly stalls sometimes, pretty annoying.

I wasn't really expecting to see that the SC kit would fix these things, more whether the tune you provide might fix it, but now I know Edward is doing the tune then I know the situation, and I have spoken to him about the tune and how we would leave off from my existing tune he is doing if I went down the SC path.

I am very interested in the WTA kit, I like the fact that when you increase pressure and temps you can cool it back down with the I/C, going through the same thing at the moment with my turbo diesel patrol, I want to I/C it before turning boost up, it just makes sense to me to increase engine life and quite simply, do it properly IMHO.

With regards to certs, Shannons states that as long as the mod is RTA approved in NSW, then they are fine with it, I don't think emissions really come into it, I think it's more that you are adding an extra 100kw to the engine power and you need to be able to stop it adequately, so I will find an engineer and run the ins and outs through them and see what they say, I'm not interested if it's not legal, too old for that crap now, I just want something sleeper and reliable, just like my old TT gen2 legacy, nobody ever knew what bit them !
I have had quite a few silly problems with my Liberty which just shouldn't have gone wrong with the km's it had on it, so now I just have to figure out if I am happy to lose $7k by selling it and cutting my losses and buying an STi WRX or spend $7k on it and keep it another 3 or 4 years, problem is I do 40,000km's per year, so I have to have a very reliable car which won't let me down !

Regards
Paul

[Tradewind]

Paul

I have 06 which is series 1 Gen IV

Yes it did have that stupid hesitation/stumble as you go to accelerate from idle, it seems to be gone now. Will check on that one, mind you I have XTR tune and headers to alter the equation, headers have smoothed out the engine right across operating range. It's only that you now mention it that I realize it's gone, I recall it in past but not since playing with headers .........

[twinturbosubaru]

Interesting, I still have OEM headers, but the general thought is that it may well be an A/F ratio sensor or Oxygen sensor which is playing up, but they all seem to do it which is strange.
Have you replaced either of those things when you changed headers ?

Regards
Paul

[Tradewind]

All still original parts

[west_minist]

I find hesitations in Subaru's are due to the following:

• Gas
• Old Spark Plugs. Should really change every 3-6months or 10,000km
• Throttle Body and Intake Headers need cleaning
• Oil needs changing. 3-6months or 10,000km
• MAF Sensor needs cleaning
• Leaking headers
• running to low a fuel tank. Around 1/4 or less

[Tradewind]

I drove my car again yesterday morning looking for the 1500rpm hesitation when starting off in first gear, I really had to mess up the start to sort of get a hesitation, otherwise it just is completely smooth. The headers have changed he gas flow characteristics of the engine and "maybe" that helped, however when you consider how the system is setup ......maybe it has just been my good luck

In addition - the air flow meter is a LONG way from the throttle body, now from the instant the throttle plate flicks open when you ask for power - there is a lag of air movement back to the AFM, the air stretches initially and this doesnt lead to an exact same air movement (at same instant) back at the air flow meter meaning there is a lag until air speed increases through meter and extra fuel is added. Subaru and all others put it back there possibly because it smooths out the air intake pulses of the engine, particuarly at idle. That big black box on back of throttle body all plays a part in smoothing out air pulses.

Adding an SC smooths out air pulses across the entire operating range, but we should hear from the customers with the kit and manual trans to see what their comment is

[Black Dragon]

I drove my car again yesterday morning looking for the 1500rpm hesitation when starting off in first gear, I really had to mess up the start to sort of get a hesitation, otherwise it just is completely smooth. The headers have changed he gas flow characteristics of the engine and "maybe" that helped, however when you consider how the system is setup ......maybe it has just been my good luck

In addition - the air flow meter is a LONG way from the throttle body, now from the instant the throttle plate flicks open when you ask for power - there is a lag of air movement back to the AFM, the air stretches initially and this doesnt lead to an exact same air movement (at same instant) back at the air flow meter meaning there is a lag until air speed increases through meter and extra fuel is added. Subaru and all others put it back there possibly because it smooths out the air intake pulses of the engine, particuarly at idle. That big black box on back of throttle body all plays a part in smoothing out air pulses.

I agree with that. I tried so many types of intake with or without the Air Camper (the big black box on back of the throttle body). The best is to get a short ram intake that is attached to the black box and use an insulation box.
If possible, wrap the intake pipe with an insulator and you'll get a real short-cold air intake that will give you a smooth aggressive response.

In my opinion for the exhaust, If you'll use a 3 inch mid pipe - 2.5 inch Y exit, It'll be better to get the collector with 2.25 inch with no cats or 2.5 inch with cats. and try to use a resonated mid pipe to smooth the air at idle and low rpm.

This only my opinion from my test results and it might be wrong

[Tradewind]

BD

The headers are now featuring a 2.25" collector

All testing has been with cats installed, both on my car and on car of customer who bought the first retail set

If you have an already modified exhaust it is now proven that these headers + revised tune from XTR will make the biggest power gains of any mod you can make to the NA engine. Only for manual trans at the moment. Its 20 - 30kw depending on which part of engine operating range you look at



NOTICE

I can take 2 more orders for headers this week, after that I wont take anymore orders until June as I will be away - let me know VERY quickly if you want to purchase a set

[twinturbosubaru]

All very interesting comments, thanks.
The hesitation is the one thing that ticks me off enough to sell the car, it's so annoying as I drive in traffic all day because I use my car for work, 40,000km a year of hesitations is enough to drive somebody crazy

How much are the headers Tim ? perhaps that's a good place to start, Edward has suggested a few things now which I have done, replace plugs, cleaned MAF, etc as he mentions in a previous post, the one thing I haven't done is replace the A/F ratio and Oxygen Sensors, that over a $1600 job just for parts as there is 4 of them, bloody Subaru ripoffs, so I am thinking of buying one of each and then changing one and see if it helps, if not change the other, I have to get a hit somehow with it if that's the problem.

You need to offer interest free finance on the SC kits

Regards
Paul

[Black Dragon]

I have an auto transmission right now but I'm planning to do a swap to a 6 speed manual from 2008 STi. PM me your offer for the collector and I'll get XTR tune and I hope this will encourage my customers to do it
If you can get a quote for the shipping to Saudi Arabia zip code 31911, I'll be grateful

[Tradewind]

All very interesting comments, thanks.
The hesitation is the one thing that ticks me off enough to sell the car, it's so annoying as I drive in traffic all day because I use my car for work, 40,000km a year of hesitations is enough to drive somebody crazy

How much are the headers Tim ? perhaps that's a good place to start, Edward has suggested a few things now which I have done, replace plugs, cleaned MAF, etc as he mentions in a previous post, the one thing I haven't done is replace the A/F ratio and Oxygen Sensors, that over a $1600 job just for parts as there is 4 of them, bloody Subaru ripoffs, so I am thinking of buying one of each and then changing one and see if it helps, if not change the other, I have to get a hit somehow with it if that's the problem.

You need to offer interest free finance on the SC kits

Regards
Paul

Paul

I cant say I would replace the AFR sensors, they have a decent life span and your car has low k's?

Check out comments by BD this morning - he found one way around the hesitation and logically it seems correct to me