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Discussion Starter · #1 ·
i was talking to a lad at motorworld about getting my car chipped and he reckons his mate was going to get one then instead he bought a induction kit for £170 and it put about 10 to 15 bhp extra on his 105 witch i find hard too beleive considering the chip only puts on its 10 bhp more also i was wondering if any of you guys can tell me the cheapest mod what will put the most bhp on my 105
 

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Dunno bout the most bhp increase.. but £80 for a K&N induction kit and you will feel a bit more pokey!! and the sound from the engine.... :up:
 

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chrisibrahim said:
i was talking to a lad at motorworld about getting my car chipped and he reckons his mate was going to get one then instead he bought a induction kit for £170 and it put about 10 to 15 bhp extra on his 105 witch i find hard too beleive considering the chip only puts on its 10 bhp more also i was wondering if any of you guys can tell me the cheapest mod what will put the most bhp on my 105
seems a bit of an exagration, depends on what he had done previously though
 

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Probably added some stripes down the side and gained another 5bhp on top of that.

Total rubbish on the 105. It is possible with the rigth filter to get that sort of gain with the 160 though.
 

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Discussion Starter · #7 ·
so basically im f**ked if i got a little more power id be happy i totally regret getting the 105 now i wish i got the 160 because all the little boy racers no most people get the 1.4 engine so they try and race me and i think i wish i had the 160 they look the same and just floor the car and let them eat my dust i would really love to have a shoot ov 1
 

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LOL
from my few conversations with stu im sure he will agree its no good forcing the air in if ya dont let it out the other side just as quick, my car is currently running £1k per 10bhp which aint cheep for the gains, £150 dont get you alot of gains youve got to work harder than that :wallb: , unless you spend £350 on nitrous and can see 20/25 bhp :up: on a lower jet , not the best way but the cheepest for quick gains, and used propperly will p..s off most at the lights who think you are a standard 105 :hiding: LOL

****
 

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Absolutely. Air/fuel in and exhaust gases out in the most economical way is key.

This is why the best place to start is with a decent enclosed induction kit (don't bother with an open cone). You could also couple this up with the 160 throttle body and inlet plenum.

One air in is sorted then you need to get the gases out. CAT back exhaust is a good start, but get a properly manufactured one that has been bench flowed.

Getting an exhaust manifold is good, but much of the gains can be had from getting yours externally welded and then cleaning out the burr on the inside. The K4 manifolds are terrible for this.

Consider a chip at this stage, and you are about as far as you can go without opening up the engine for head work etc.
 

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Buy a Scorpion or Janspeed or similar. Will be more expensive than the likes of a powerflow job, but it has been designed to give the optimum performance and proven to gain power by benchflowing against the standard system.

Powerflow just use a series of boxes that are about the right size and stuff some pipe between them. You could gain power, or you could lose it.
 

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i have just an open cone induction kit atm is it really worth the extra £££ for an enclosed ?? will it still sound as good ?
 

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MgZr said:
i have just an open cone induction kit atm is it really worth the extra £££ for an enclosed ?? will it still sound as good ?
Around town the difference is staggering, and it is even noticeable out of town on the open road.

As for sound. No it won't sound like a Nova as it is not much loader than the OE system.
 

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Discussion Starter · #14 ·
i dont no much but what i have been readn of some users the enclosed ones give a better performance but dont sound as good i have a k n and what i think is on a morning when i start my car its great i can feel a bit more power but soon as my engine gets hotter it dies the power also i use more petrol but they sound great
 

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You are about right in your assumptions there.

You won't get the noise, but will get the performance with the enclosed filters.
 

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Loadsamoney! So shut it!!!
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a 1.4 would suit a turbo more tha the VVC...just a thought

never regret the car you have! JUST look at it its sexy! mine is not the fastest in the world (yet) but today i was driving along at the speed limit happy kowing i drive a good looking car!

the ZR looks sooo much nicer than most so dont let it bother you just enjoy!
 

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The 1.4 has thicker liners than the 1.8.

But you still couldn't get the 1.4 on high boost to the power levels of a VVC on a low pressure turbo.
 

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Discussion Starter · #19 ·
your totally right it might sound sad but i love my car i have had a lot of thing like motor bikes and stuff in genral and i have got bored with every thing but ive never been bored off my car ive only done a few things too it i need i few more but i look at some peoples cars and they go over the top i think ive nearly got the right balance too make my zr nice
 
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Here's a quick guide to BHP (Bar Horse Power). Should shed a little more light onto some of the claims people make.


Guide to Bar Horse Power:


Right, ive noticed a lot of magazines and stuff quoting BHP figrues against cars and thought i should take the time to explain what these are.

Basically the figure they are quoting is the most important factor about the performance of a "phat/wicked ride".

Brake horsepower and Torque are all very well, but the main figure that counts is Bar Horse Power, this is the figure that you tell your mates down the pub.


To calculate this use the following rules:

STARTING POINT
The manufacturers generally handpick an engine that they know is on the right end of tolerances for testing, this means that often its a higher figure than an average new engine actaully makes, ignore this fact and swear blind that your smoking nasty example of a now half ***ked engine makes the figure claimed, round up whenever possible, so 152bhp = 160bhp etc

BOLT ON MODS
Obviously the correct way to get more power from your smoking engine with poor valve seal and rings that are about as tight as freedy mercury's arse, the way to get more power is to ignore those facts (see "starting point") and just bolt tat onto the outside of it.
These mods can include filters/exhaust/dumpvalve etc, or even semi-internal mods like cams, we wont cover things like bearings or rings cause those arent very shiney so you wont want to replace them.
The manufacturers always state the gains that you will get from a mod, often your car wont be listed specifically with a power gain, so just pick the biggest one that is, if a skyline can pick up 22bhp from an exhaust, then so can your saxo, again dont forget the golden "always round up" rule.
The figures should all be added up, and round up again.


ITS A GOOD'UN
You need to add a proportional value based on the "its a good'un" factor of your engine, basically, as this is YOUR engine not anyone elses, its special, so the mods will all make more difference, so multiply the number up a bit to take this into account.

STICKERS / SPOILERS
Race cars have them, so you need them too, the key thing here is to NOT buy ones that apply to anything you have fitted, go for stuff that isnt even made for your car, so Greddy/HKS/Blitz is ideal for an XR2i.
Now the thing to remember with modifications to a vehicle is that they work in harmony, it all comes together as a package, exhaust will compliment head mods, filter will work well with a decat or whatever, now stickers are about attitude, and attitude is what counts out there on the street (or halfords car park).
Take the % of your car covered by stickers and spoilers and add that onto your BHP figure as an attitude adjustment (dont forget to round up!!)



WORKED EXAMPLE:
Fiesta XR2
quoted figure (use a guess if you cant find the manufacturers), 94bhp
filter (using the figure for a porche 911) - 11bhp
Exhaust (using figure for a skyline) - 22bhp
decat (never had one so you get this without doin anything, PHAT!) - 12bhp
sticker coverage = 47%
spoiler coverage = 12%
Its a good'un factor = 25%


We'll do the rounding first:
So the calcs are:
94 round up = 100
filter round up = 20
exahust round up = 30
decat round up = 20
sticker round up = 50%
spoiler round up = 20%
good'un round up = 30%

So 100 + 20 + 30 + 20 = 170
plus stickers 50% = 255
add spoiler factor 20% = 306
add good'un factor = 397.8

Final round up = 400bhp



This however is only your basic Bar Horse Power figure, make sure when you quote it you increase it inversely to the age of the girl you have with you at the time, and in direct proportion to the number of pints you have consumed.
 
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