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Author Just ordered a Mantzel Power Air Box
Greasemonkey
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Registered: 17th Apr 02
Location: Drives a Tractor
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2nd Jun 03 at 22:21   View User's Profile U2U Member Reply With Quote

Right just ordered the above (588) bit expensive gonna fit it myself, i have heard the power increase aint that good really, has any one got one fitted to a GSI with plastic manifold, and do they make that much difference.
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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2nd Jun 03 at 23:16   View User's Profile U2U Member Reply With Quote

why have you ordered one if you dont believe what the power increase is?

They do what they say on the box. Expect 20+ bhp more.
Daimo B
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Registered: 20th Mar 00
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3rd Jun 03 at 12:10   View User's Profile U2U Member Reply With Quote

U have the early C16XE enigne? They work VERY well on these lumps. Dons is running 161bhp @ 7500rpm (M Box-4-2-1 Maifold, Cat BAck exhaust, Superchip). Also know someone who has a C16XE lump running around 145bhp with the same mods bar the superchip[ (Power from the mantzel box come higher up the rev range).

Dont expect great torque, but power wise they seem to be very good.
Greasemonkey
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Registered: 17th Apr 02
Location: Drives a Tractor
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3rd Jun 03 at 12:13   View User's Profile U2U Member Reply With Quote

sounds good then, gonna fit it myself think i should be ok, yeah its an early engined GSI, i just want enough power to whoop the CRX's in my town, think i might be nearly ready
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Jun 03 at 12:22   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Daimo B
U have the early C16XE enigne? They work VERY well on these lumps. Dons is running 161bhp @ 7500rpm (M Box-4-2-1 Maifold, Cat BAck exhaust, Superchip). Also know someone who has a C16XE lump running around 145bhp with the same mods bar the superchip[ (Power from the mantzel box come higher up the rev range).

Dont expect great torque, but power wise they seem to be very good.


I would say those figures are on a very optimistic rolling road.

But still a very good mod for the money and easy to fit.
Patrick
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Registered: 25th Apr 02
Location: SE London
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3rd Jun 03 at 12:57   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Daimo B
Dons is running 161bhp @ 7500rpm (M Box-4-2-1 Maifold, Cat BAck exhaust, Superchip).


52bhp from just those?

You'd be lucky to get 12bhp from a exhaust, manifold and chip. Then 40bhp from a Mantzel?
Daimo B
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Registered: 20th Mar 00
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3rd Jun 03 at 13:10   View User's Profile U2U Member Reply With Quote

Thing is, this is what i thought.

BUT

D5 was RR at 109bhp with a CAT BAck Remus Zorst (Standard bore size).

She had the CAT BACK system replaced and an ind kit fitted and it was RR @ 114bhp.

The modifications were carried out, and on the SAME RR showed 161bhp.

Even working out on the % difference the worst it can come out is at 155bhp.

Believe me, i was very optimistic about those figures as well, but....

There was a Nova done, same modifications as Donna has, same type C16XE engine, and was RR at 154bhp.

Only thing is it onlty has 117lb ft torque.
Daimo B
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Registered: 20th Mar 00
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3rd Jun 03 at 13:12   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Patrick
quote:
Originally posted by Daimo B
Dons is running 161bhp @ 7500rpm (M Box-4-2-1 Maifold, Cat BAck exhaust, Superchip).


52bhp from just those?

You'd be lucky to get 12bhp from a exhaust, manifold and chip. Then 40bhp from a Mantzel?



Considereing the engines were designed with 150bhp, then a different cam profile and inlet system and exhaust system were change for emissions, that about puts it right

The C16XE is much better than your X16XE lump for minor modifications.
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Jun 03 at 13:14   View User's Profile U2U Member Reply With Quote

Torque will hardly go up on N/A engine tuning anyway.

The way BHP at Flywheel figures are calculated leaves a lot for optimism. They only way to test it properly is to put it on a engine dyno.

How many bhp at the wheels?
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Jun 03 at 13:16   View User's Profile U2U Member Reply With Quote

161bhp is what you would get with throttle bodies and proper management. Not a pooper chip
Daimo B
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Registered: 20th Mar 00
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3rd Jun 03 at 13:18   View User's Profile U2U Member Reply With Quote

Not sure, this was done quite a while ago. Wont put it back on the RR anyway. Have to take the front bumper off.

End of the day, it scares 2.0litres, and i think its a great engine, really does go some considering its got 17"s, and a hell of a lot of weight.

Even Steve Barley thought it was bloody quick when we were racing him to USC last year. And he's got a 225bhp Throttle bodies 2.0litre 16v

To be honest, she doesn't care how fast it goes. It drives nice on the road and theres plenty of power there when needed, so shes happy
Daimo B
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Registered: 20th Mar 00
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3rd Jun 03 at 13:19   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by miles
161bhp is what you would get with throttle bodies and proper management. Not a pooper chip


Pooper chip was specially designed for the C16XE running M Box. VKR (before it went to Courtnay) got all excited when tuning it and couldn't wait for another C16 engine.

Pooper chip was to raise the limiter to 7500rpm and sort all the fueling out.
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Jun 03 at 13:21   View User's Profile U2U Member Reply With Quote

Still not a patch on proper management.

Raising the limiter is a big advantage though, for the cost.
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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3rd Jun 03 at 13:23   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Daimo B


To be honest, she doesn't care how fast it goes. It drives nice on the road and theres plenty of power there when needed, so shes happy


Fair play, if its a nice civilised drive then spot on, if thats what you want from it.
Daimo B
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Registered: 20th Mar 00
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3rd Jun 03 at 13:24   View User's Profile U2U Member Reply With Quote

Esp as she only Paid 800 for the lot to be done (M-Box, chip, fitted, setup etc).

As i say, shes not interested in all that. It goes well on the road, shes happy, she doesn't use her car for racing. She needs her license for work.
Donna Corsa GSi


Registered: 1st Jan 70
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3rd Jun 03 at 16:46   View User's Profile U2U Member Reply With Quote

Best engine modification I could of done on D5. I've had plently of opportunity to put a 2.0litre in even Daimos engine was offered to me first, when my piston was cracked, but i wanted to keep then 1.6 as I love my engine and its the only part of the GSi left
Artkart
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Registered: 21st Aug 01
Location: Netherlands
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4th Jun 03 at 07:27   View User's Profile U2U Member Reply With Quote

Those of you who don't believe Mantzel is bringing that great performance:

I have a 1.4 16v, I have 125 bhp from Powerbox + chip (also from Mantzel, adjusted ECU).

They're now working on a 1.4 16v Corsa C, and it should give 145 bhp, with new cams, Powerbox and chip etc.
Artkart
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Registered: 21st Aug 01
Location: Netherlands
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4th Jun 03 at 07:30   View User's Profile U2U Member Reply With Quote

I will place a few pics soon from RR-graph and fitting pics.

In advance: http://home.student.utwente.nl/a.r.baas/corsa/ and then corsartkart.jpg

Cheers, Artkart
andy hirst
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Registered: 18th Apr 02
Location: Rochdale, Greater Manchester
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4th Jun 03 at 10:47   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Daimo B
Not sure, this was done quite a while ago. Wont put it back on the RR anyway. Have to take the front bumper off.

End of the day, it scares 2.0litres, and i think its a great engine, really does go some considering its got 17"s, and a hell of a lot of weight.

Even Steve Barley thought it was bloody quick when we were racing him to USC last year. And he's got a 225bhp Throttle bodies 2.0litre 16v

To be honest, she doesn't care how fast it goes. It drives nice on the road and theres plenty of power there when needed, so shes happy


is Steve Barley's reiger kitted with purple flip paint and 17inch antheras
Daimo B
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Registered: 20th Mar 00
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4th Jun 03 at 15:18   View User's Profile U2U Member Reply With Quote

The very same northener. Top bloke
KOMBAT_CORSA
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Registered: 20th Mar 03
Location: South Yorks
User status: Offline
4th Jun 03 at 17:02   View User's Profile U2U Member Reply With Quote

DBilas do a power box which looks sweet on page 46 of revs, this is 4 a 1.4 16v or 1.6 16v, it comes with a alloy cam cover to match the air box all 4 460 from Regal Auto Sport
Joel
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Registered: 31st Jan 03
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10th Jun 03 at 21:10   View User's Profile U2U Member Reply With Quote

i saw that dbilas manifold as well an think im gna get it. Wen ive got that is there any other section of the exhaust inlet thatll need changin or is that it??
Dave Helium
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Registered: 28th Mar 02
Location: Aberdeen Drives: Mk4 ibiza fr and omega elite 3.2v
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10th Jun 03 at 22:53   View User's Profile U2U Member Reply With Quote

im wanting 2 know this 2!!
Daimo B
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Registered: 20th Mar 00
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11th Jun 03 at 11:21   View User's Profile U2U Member Reply With Quote

I dont like Dbalis. Patrick does, but i'd much rather a Mantzel box. Least there TUV approved and look the best Deffo best build quality.
Wolf In Welsh Clothing
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Registered: 31st Mar 03
Location: North Wales...... Cooper S on order
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11th Jun 03 at 12:49   View User's Profile U2U Member Reply With Quote

Its all down to cost!
All the inlet manifolds should give at least 15bhp on a standard 1.6!
Mine gave +31bhp but it did cost 700!
Velos and lexmaull are cheapest.
Depends on how much uve got to spend!
Would recomend chipping it though as i got 4bhp more by raising the rev limit from 6700 to 7000rpm with more power stil to go!
All costs money though as if ure going over 7000rpm its worth getting con rod bolts fitted!

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