30 replies to this topic

[Jim_Cross]

Got a full stage 3 and I am getting nearly 180bhp, think it is 178. sumfink. That is with flywheel, cams, headwork etc. SO I think that 170bhp with a Stage 1/2 is highly optimistic!?

I'm not so sure. 20bhp from exhaust induction and remap could be possible, given the restrictiveness of the pre-cat and standard cat, and the proven gains of some induction kits.
You could turn it around the other way and ask just how much benefit you get from cams and headwork...especially without manifold replacements.

[BradW]

Just so we don't all have to trawl through the old threads...below is the latest version that I could find of the tuning table:

Attached Files

•  Scrap_tune_chart.jpg   69.26KB   0 downloads

[Jim_Cross]

Have to say though, I'd take the tuning table with a spadeful of salt. Much better to read people's impressions (there are some bad as well as good), and compare rolling road plots which give a better idea of torque spread across the rev range etc

[Toski]

Can I ask for a bit of clarification on that table? [Newb alert] It mentiones Pipercross and Viper? So which one is the pipercross viper induction kit or are they both the same? Looking at the different induction kits, can we assume that ITG kit gives a better kick?

[clipping_point]

I would guess it is the same. The table is based on information found here

[stuH172]

Had a good read of the other threads and it seems that around 10 BHP is the return for high flow cat, exhaust, induction and remap (what's that cost - about £1k ??) - I know it's not all about headline figures, but this seems poor and some of the before and after plot comparisons don't look too good either - which makes me wonder whether the on road driveability is greatly improved. I'm really after a package that will improve the distribution of torque across the rev range and free up the top end so its a bit more rev-hungry and will pull harder/more keenly thru to the limiter - it just seems a little reluctant to pull thru the last (and useful) bit of the rev range, but it's only done 12k miles - would this be a factor, I've seen some comments about the engine needing 20k on it before it really comes to life ? AMD and A.N. Other seem to insist that exhaust, remap, cat will produce min of 20BHP gain and improve driveability (torque curve) but I'm far from convinced based upon one of the tuning threads here and it seems very hit-and-miss. It seems like I can't really be sure what I'll get for the money.................is it really money well spent ??

[DUNNO]

ive got a stage3 and have had the car since its original, unmolested state....... ive had a stage2 aswell, in the interim and so feel qualified to give my opinion on each... firstly ive never been on track in my car and my roads are absolute crap where i live for maintainence, and so suspension mods are out (except a geo setup), i wanted more power (for point and squirt) and a better noise, more of a "sportscar" image of my car.....job done ....... firstly i went and had the remap and exhaust, (no induction kit), it makes a HUGE difference to the feel of the car and gave me 170 (had the car RR on that g-force day when ever it was made 169 so AMDs rollers cant be that far out ) on similar conditions, so i believe that the figures are correct, best bang for buck IMHO is a milltek and remap and induction kit. you get the feel, noise and performance difference to justify the expense i was noticed that the mods are geared towards thrapping the engine (best above 4000rpm, which retains low down tractibility in town) the exhaust sounds awesome after 500 miles of use, and helps get the gases out higher up in the rev range, it burbles, pops when changing gear and sounds ok at cruising and loud when floored (a proper sportscar sound)..... induction kits are good for noise aswell, as being close to cabin, i had a cone type (would worry about filtration if lots of miles, buts its a 2nd toy for me ), nice induction noise to harmonise with the milltek... ITG please... the first drive that i had after i got the car back from the stage 3, it felt like someones elses car, it completely changed the character of the car (for the better ) and was strange driving it after, truthfully after a couple of drives i wasnt sure i liked it ... however now i wouldnt be without it... the cams and flywheel compliment each other properly, the remap shows more power after 4000rpm, the flywheel gets you in this band quicker and the cams really kick in during this range, feels like a vtech (kinda), the car makes power right up to the limit (6500rpm) the car is more resposive for the throttle and the lumpiness of the cams on idle is wicked .... not sure if the flowed head really makes any difference , however id like to think that it helps the smoothness of the engine... as ive said though exhaust system and remap is the way to go

[DUNNO]

Had a good read of the other threads and it seems that around 10 BHP is the return for high flow cat, exhaust, induction and remap (what's that cost - about £1k ??) - I know it's not all about headline figures, but this seems poor and some of the before and after plot comparisons don't look too good either - which makes me wonder whether the on road driveability is greatly improved.

I'm really after a package that will improve the distribution of torque across the rev range and free up the top end so its a bit more rev-hungry and will pull harder/more keenly thru to the limiter - it just seems a little reluctant to pull thru the last (and useful) bit of the rev range, but it's only done 12k miles - would this be a factor, I've seen some comments about the engine needing 20k on it before it really comes to life ?

AMD and A.N. Other seem to insist that exhaust, remap, cat will produce min of 20BHP gain and improve driveability (torque curve) but I'm far from convinced based upon one of the tuning threads here and it seems very hit-and-miss.

It seems like I can't really be sure what I'll get for the money.................is it really money well spent ??

oh and my cars just done 7000 miles, it was one of the lowest mileage vx's that AMD had worked on.....


things can only get better

(if hangar111 ever send me my ITG kit )

after going into a turbo after mine (the car felt anodine) noticed how the cars characteristics rub off on you.

and no i never brought the turbo...

[DUNNO]

Got a full stage 3 and I am getting nearly 180bhp, think it is 178. sumfink. That is with flywheel, cams, headwork etc. SO I think that 170bhp with a Stage 1/2 is highly optimistic!?

I'm not so sure. 20bhp from exhaust induction and remap could be possible, given the restrictiveness of the pre-cat and standard cat, and the proven gains of some induction kits.
You could turn it around the other way and ask just how much benefit you get from cams and headwork...especially without manifold replacements.

just saw this, all im going to say is that the headwork will only work higher up in the rev range.... 6500 aint enough we make power up into the limiter... the cams will deliver power much further than the standard ones 5500-5600 and thats your lot.......

stage3 boyz back me up

me want higher limit

[stuH172]

DUNNO............thanks for your comments The impression I've got is that the standard zorst and cat/pre-cat really choke the engine and that just opening this up and having the remap will transform the car (although, as said above, I was concerned that the results are highly variable). So, is the zorst and remap a Stage 2 ?? sounds like stage 3 is the full monty - flywheel, cams, headwork ?? I was under the impression that Miltek and remap would cost about £1,000 at AMD - is this right ? Cheers.

[DUNNO]

should cost about 1300 quid for the stage 2...... bearing in mind i had mine done early on.... year last february methinks... may be cheaper now... the exhaust system is restrictive due to all the euro 4 crap, bin the lot and get a proper system but also do it with the remap, the key is to get the car harmonised properly, just putting on a exhaust will only help noise and power a little, however a remap will tune the ECU into using the exhaust properly...= much more bang for buck also get an induction kit aswell, it hads little performance, but it makes the car sound so much more powerful as its louder.... one with carbon heat shield, intake replacement pipe...... dare i whisper it........ [itg]. that way your car'll sound like a racer ive never looked back at spending what amounts to a hell of a sum of money where are you based (if in beds,bucks as test rides, note not drives, can be arranged)

Edited by DUNNO, 21 May 2005 - 09:23 AM.