30 replies to this topic

[Sicey]

Not convinced with the performance figures, alright its a damn site cheaper than the AMD conversion but am sure an AMD car would outperform it, anyone with the AMD stage 3 care to comment or have any perfomance figures?

http://www.opel-spee...24.0.0.1.0.html

[BradW]

BUMP Thoughts?

[clipping_point]

I don't know, but to me it seem they have equipped a Speedster 2.2 with a new air filter and new exhaust, and remapped the thing. If this is well done they get 135 WHP and 170 BHP. However if they really reached 236 km/h in the test car then the 180 BHP is prolly there, and then they MUST have done something to the engine internals. But they may have calculated the top speed, the acceleration figures weren't too impressive.

[Thorney]

I have to say I'd be amazed for those kind of gains with simple eaxhaust, remap and filter.

[zz_marcello]

Hey Thorney,

its not only a filter its a complete new intake section. (but intake manifold is original GM)

http://www.moto-conc...p?item_id=15452

It has larger bent radiuses (especially directly next to the throttle valve)
and a bigger hose diameter compared to the serial plastic thing
(which has to fit several GM cars).

They claim 7PS only with this mod.

Normally I would think 7hp only for the intake section is not possible
(excecially as the original 2,2 Filter is not bad at all)
but one Member of the German Forum made a before-after test on the rolling road and we have 2 cars (179 and 181 hp) with the whole paket.
(intake hose with filter, exhaust, software, )

disadvantage: At full trottle this intake system is louder than any (piper, komo-vauxhall) sport-exhaust.
The whole system delivers a good 100dB at full trottle...
(nothing for me)

Regards,
Marcello

Edited by zz_marcello, 19 April 2004 - 02:27 PM.

[clipping_point]

Saw this table on the german forum. Doesn't look like 180 hp to me. Then again I do not have similar figures for the rubber, cheeky, PaulCP or PaulB cars. Shame on you!

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[clipping_point]

and we have 2 cars (179 and 181 hp) with the whole paket.

What WHP did they have?

[da_murphster]

I have been in touch with the moto concept guys as I thought that the Induction might be worth a try over the Viper (both same price). I am worried about the noise on the track though, alot of money to spend never to be able to drive it to the max, esp with the zaust being loud to start with (janspeed). These moto concept people seem to be pretty well regarded and definately know what they are doing!! Decisions, decisions........ (or do I just mod my air box and chip it and be done with it!)

[Thorney]

Thats the funny thing about mods, its not quite as simple as x bhp for induction + y bhp for exhaust = xy bhp. They are cumulative but not simply adding one to another, it maybe that some mods exagerate the gains or simply divide them so simply saying 7bhp with induction + 10bhp for exhaust = 17bhp gain doesnt really work. I'm happy to be proven wrong but the NA engine does need a lot of internal work to get more power IMO.

[zz_marcello]

Doesn't look like 180 hp to me

the Elise 160 also is only 3/10 sec faster 0-100 than the standard with 120hp...

You can´t compare only hp numbers.
The flat torque turbo hp and peaky NA hp gives unsimilar acceleration through the rev-range....

If power delivery is very peaky i think its possible.
The car in the test also runs with heavy 7,5/17 - 8,5/17 rims.

M

Edited by zz_marcello, 19 April 2004 - 03:29 PM.

[da_murphster]

the NA engine does need a lot of internal work to get more power

There several people pushing 170-175bhp with just simple mods. I'm aware that its not all about bhp, and i doubt anyone will be able to even feel the differencve between the many options on the NA, but it would be good to get the max benifit with the "ultimate combination". Until we give all these other "tweaks" a go we can't compare.

Also I'm pretty much broke so want to push my pennies as hard as I can!! (damn student days, why didnt they tell me money doesnt grow on trees)

[clipping_point]

I think Ricky was one who went the filter+remap+exhaust route with a very disappointing result. And it was really classy stuff he bought. So now he is going for some real engine mods. I'm scared that I'm making his mistakes all over

[Thorney]

It's not to say that induction/zorst/remap doesn't given decent gains because they do, I mean 145bhp to 170bhp is still a pretty decent gain for essentially add on modding. However to get above 170bhp ish I'm pretty certain that engine internals need to be modified but more importantly its HOW the car drives and the lightened flywheel/gfh/can DO make a massive difference (as you'd expect) the extra 10bhp is a diversion IMO.

[Ratspants]

I have been in touch with the moto concept guys as I thought that the Induction might be worth a try over the Viper (both same price).

I am worried about the noise on the track though, alot of money to spend never to be able to drive it to the max, esp with the zaust being loud to start with (janspeed).

How easy will it be to get this stuff imported to the UK? I had a look at the komo-tec website and it seemed a right royal pain as they wouldn't accept credit cards for purchases from the UK.

Have been reading about the DBilas intake manifold and that sounds like it's seriously loud too!

Ben

[Jean Meurtrier]

Is it 180 BHP or 180 PS? Because 180 PS = more or less 177 BHP. Am I wrong?

[clipping_point]

You mean US hp (550 lbf.ft/s) compared to "Metric" hp (735.5 W) ..then it is true! But is this country still that "imperial"????

[Ricky2772]

I think Ricky was one who went the filter+remap+exhaust route with a very disappointing result. And it was really classy stuff he bought. So now he is going for some real engine mods.

I'm scared that I'm making his mistakes all over

BMC + remap = zero gains,
add the exhaust, decent gain above 4000rms, I'd think around 160ish...shedding weight makes it feel noticeably quicker along the whole rpm range.
sure enough, only working on the internal, and giving more fuel (with bigger/extra injectors)will produce a real extra grunt.

[Jean Meurtrier]

You mean

US hp (550 lbf.ft/s)

compared to

"Metric" hp (735.5 W)

..then it is true!

But is this country still that "imperial"????

1bhp (british horse power) = 1,013872 hp DIN (german horse power)

But I don't know if it is effective practically speaking.

[andycanam]

It's quite amazing how untunable this relativelly modern engine is..... 2.2L and it struggles to get to a real 180bhp. and why is it so low reving? I have no idea if it's been done, but I'd pesonnelly go the throttle bodies route and new engine managment and then investigate if I can get the engine to rev beyond 7000rpm. Andy

[clipping_point]

Lets see what dude can get out of his engine. The ITG/Flo-Tech/Viper filters look ridiculous at the side of this monster

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•  intake.jpg   147.58KB   0 downloads