Author Topic: performance mods - expected power  (Read 4196 times)

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Offline fez200

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performance mods - expected power
« on: Jan 20, 2006, 12:22PM »
ive just put a 3" exhaust and boost guage on my once factory Attessa

my question is the boost guage reads 10psi at max throttle now with just an exhaust mod. is this right?

im also getting an intercooler and think of getting a manual boost controller this week.
is it really worth getting the maual boost controller if the exhaust seems to have done most of the performance improvments.


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Offline Budgie

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Re: performance mods - expected power
« Reply #1 on: Jan 20, 2006, 01:02PM »
You boost will increase with a bigger exhaust, it will also increase with a bigger intake/more free flowing intake.

My car has a boost controller, but its fully shut.  In effect, the car is running at the lowest boost it can, which is 9psi @ WOT from 4000 to redline.  I don't have the boost any higher due to top mount intercooler.  I would actually like the boost to be LOWER at this time of year.

I'm guessing you have a U13 ATTESA?  I wouldn't worry about the boost controller if you are happy with the power you have now.
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Offline fez200

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Re: performance mods - expected power
« Reply #2 on: Jan 20, 2006, 02:54PM »
YEAH ive got the U13 import,
 im happy with the way it goes now but just got the intercooler and the boost controller delivered from ebay about 1 hour ago. dont except refunds etc.. $200 for the lot was pretty cheap though . i wanted it to go a little better without internal mods.

* not sure if the 600x350x80 core i bought will fit in the front of this vehicle. its friggin huge!!!!

anyone fitted big intercoolers into their U13's
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Offline Craazy

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Re: performance mods - expected power
« Reply #3 on: Jan 20, 2006, 03:33PM »
is yours a manual??

when i did my exhaust i gained about the same amount of boost so dont be worried, but the one thing i will say now is change your fuel pump as soon the stocky will run out of puff and will start to make the engine ping, what will happen is the car will make full boost but not feel to make any power.... so if this happens you will know what the problem is. but never fear, pull over, turn the car off for 2 mins then start her up again and it should stop, but dont rev the tits out of her again for a while

as for the cooler, they do fit without to much hassle, just go see a place that has experience with the cars and installs on them, coz i know it can be a prick if you dont know what your doing


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Re: performance mods - expected power
« Reply #4 on: Jan 20, 2006, 05:25PM »
I have to say boost controllers are cool. I was with a friend in a 180 and he had a boost controller which he had set on some low psi. But when we saw a r32 gtr he cranked it up. We lost but it was a damm good race. I suppose its just a toy.  :)
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Offline Craazy

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Re: performance mods - expected power
« Reply #5 on: Jan 20, 2006, 06:05PM »
boost controllers, while they are good fun, are only good fun when set up properly and used properly.

theres the one con with boost controllers, "used properly".
alot of people set them up incorrectly and when there car dies they have no idea that it was them that killed it, i have seen it a few times now and it still amuses me.
no i am not saying that i know how to set them up, i am learning slowly, but leave it to an expert who can set it up on a dyno, otherwise you can get lots of probs.

i know that when i get an electronic boost controller i will be doing the full dyno tune and setup. right now i have a manual boost controller in and it is good for getting the boost higher earlier, it is far from optimum coz of loss of boost at higher rpm. a setup elec boost controller can counteract this and control the whole shebang very well.

something to keep in mind for the turbo aficionado


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Offline Ka-Bluey

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Re: performance mods - expected power
« Reply #6 on: Jan 20, 2006, 10:25PM »
I'd say if you going to put money towards a boost controller, get an electronic one.
That way you have full fun and power at a push of a button. On a rare ocassion a wheel going in 2nd doing 4000rpm...hehe good old V6 VR4's...hehe.

 

Offline attessa_sss

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Re: performance mods - expected power
« Reply #7 on: Jan 21, 2006, 12:24AM »
i have a U13 with a 600 x 300 (i think) and all they really had to do was cut a little away from the back of the original bumper to clear.
fits easy lenth ways its just width u have ta play with (trimming front bar a little)

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Re: performance mods - expected power
« Reply #8 on: Jan 22, 2006, 10:01PM »
I'm about to install a 300x450x80 intercooler and it looks like I'm also going to have to cut the inside of the bumper a bit.  As for structurally mounting it, it's reasonably easy.  Take out the old intercooler and put the new one in with custom made brackets to suit the intercooler you have bought.  The piping lines up without any problems, however, sourcing a 2.25" to 3" hose reducer can be quite difficult.  It took me a while to find someone that could supply that size.
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Offline mr_U13

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Re: performance mods - expected power
« Reply #9 on: Jan 23, 2006, 11:34AM »
hold on after the boost controller... ;D

Offline bluebird

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Re: performance mods - expected power
« Reply #10 on: Jan 23, 2006, 09:40PM »
I fitted an AVO cooler myself and found there was shit loads of room behind the factory bumper.
In all it was about 35% larger than stock when you factor in width as well as depth.
Remember the end tank design is very important when choosing an intercooler.
I went for an AVO item as it was proven to work well.
Took one complete day.
If you want the stealth look paint it black, cops will have no idea.
Also use slim line number plates to allow for more air flow.

Just got craazier is right about boost controllers.
Air/fuel mixtures are vital so if you want to run around 15psi like I am have a full dyno carried out.
My manual GO FAST BITS ATOMIC controller actually works well at holding  boost stable.
I am just waiting for my fuel pump and injectors to be done to complete the system before my next dyno run.

Offline fez200

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Re: performance mods - expected power
« Reply #11 on: Jan 24, 2006, 12:05PM »
the stealth look sounds good, and im seriously thinking of doing it. so far my exhaust is the only thing that gives people any sign that something lurks below...

however ive heard that painting the intercooler black can infact reduce the performance of it, as black absorbs heat

maybe this is a wives tale.???
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Offline Craazy

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Re: performance mods - expected power
« Reply #12 on: Jan 24, 2006, 03:44PM »
sitting still it does absorb heat and does not allow the cooler to have as much air flow onto and threw the fins, unless you are getting a cooler that is black from where it is produced then leave it the way it is. just for the security that that is how it performs at its peak.

if you want to preserve the sleeper look, just put some black mesh in front of it to break up the colours a little more


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Offline fez200

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Re: performance mods - expected power
« Reply #13 on: Jan 26, 2006, 05:40PM »
ive now added my 3" exhaust, intercooler and modified the induction (boost has risen to about 11psi) i have not had it tuned for these mods yet

ive timed my car with the g-tech metre and only got a best of 0-100, 6.7  & 1/4 time = 15.2 (are these times OK?)

 i thought id get a little better performance than this, maybe the tune will get it going better??
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Offline Craazy

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Re: performance mods - expected power
« Reply #14 on: Jan 26, 2006, 09:33PM »
dont take the gtech as gospel as this could still be way off the mark......

this is an auto obviously?? as with those mods you car as a manual should be doing mid 13's no probs at all


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Offline fez200

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Re: performance mods - expected power
« Reply #15 on: Jan 27, 2006, 06:56AM »
yeah its an auto..

wish i had the manual now... just wanted to get the car a bit qicker.   

not sure to where to go from here.. dont want to spend too much more.. its already cost me $2000 for the mods ive done now.
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Offline Craazy

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Re: performance mods - expected power
« Reply #16 on: Jan 27, 2006, 04:02PM »
dont expect it to be cheap but if you want something that will help. and for cheap....

ask noss for a chip and daughterboard. will make a huge difference and you will also have the option of puting in a larger AFM if you want some extra power ontop of the chip


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Offline fez200

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Re: performance mods - expected power
« Reply #17 on: Jan 29, 2006, 03:13PM »
whats a larger AFM cost and where do you source them from.?

ive asked noss about the chip but havent had a reply yet
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Offline Craazy

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Re: performance mods - expected power
« Reply #18 on: Jan 29, 2006, 03:22PM »
noss would be able to supply an afm with the chip if you get a price with one included, but dont count on getting change from 250 for one. thats about the lowest price i have seen


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Offline Counterpunch

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Re: performance mods - expected power
« Reply #19 on: Jan 29, 2006, 10:03PM »
From what I've read, your gearbox is becoming your bottleneck.  Spend the money and have it rebuilt for fast shifting or swap it to a manual.  It will cost you upto $4000 but you will see the results.  I was pulling 14.0 seconds in my Attesa with a Turbosmart bleed valve boost controller at 11 PSI and a pod filter.  Everything else was stock.
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Offline attessa_sss

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Re: performance mods - expected power
« Reply #20 on: Feb 22, 2006, 12:21PM »
i also have a auto and when i 1st bought the car going back say 6 months i enquired about the manual conversion and it was gonna cost $3000.
$1500 for parts through ss automotive and another $1400-1500 labour through rocco's performance! decided to spen that money on mods (plus wife wanted auto, wipped hard hehe)