42 replies to this topic

[Paulus H]

I see lots of topics on here regarding the 2.2 NA engine. However, it seems to me that there seem to be no solutions to unlocking hp from this engine. Has anyone made over 200 bhp for sensible money? Or for any money at all? I have owned a big power turbo car in the past and although it was exciting, it had it's downsides which I don't want to repeat. My preference is for linear power, no turbo lag & power building progressively towards 7,000 rpm. Is this a possibility?

[fiveoclock]

My preference is for linear power, no turbo lag & power building progressively towards 7,000 rpm.

That'll be sc then

[techieboy]

Made 185bhp on mine as an NA before going with the supercharger and it's super smooth delivery. Some of the guys in Holland/Europe claim to be getting circa 200bhp with their newly tweaked OE ECU's with minimal bolt-on's (2.4 inlet, exhaust manifold and decent exhaust system). Not seen any graphs though to know what the power delivery is like but assume it's reasonably good as it's using the ECU's own built-in self learning to do most of it.

[The Batman]

techie that is because none of them have made it to a rolling road.... there claims are as good as me saying i have 12 foot penis and when i get a erection i faint.... on that note, good night

[Mike (Cliffie)]

techie that is because none of them have made it to a rolling road.... there claims are as good as me saying i have 12 foot penis and when i get a erection i faint....

on that note, good night

Thanks for your input there Joe, most educational.

Back to the topic.

Depends on budget. For £1,600 ish you can go for a decent exhaust and air filter, polished throttle body, 2.4 inlet and remap. I saw 165 BHP, Techieboy saw 180 BHP and PJSibley saw 175 BHP.

You can spend £4k and go Supercharged and get 260 BHP.

These are not cheap little cars to tune.

Edited by Cliffie, 04 March 2010 - 07:51 AM.

[siztenboots]

SBD Motorsports in Kingston could do a seriously good 2.0L XE based engine , for sensible money. Someone really ought to tempt them to pick up the new 2.2L GM stuff

[vocky]

I helped build up a 200.8 bhp engine the other month, it had; ported head, standard valves and springs, piper cams piper 4-1 exhaust manifold, 200 cell cat, 2.5" exhaust system dbilas inlet manifold, ported 58mm throttle body, standard airbox with panel filter lightened flywheel and crank pulley balancer delete superchips remap I'm not sure which injectors it had fitted when mapped but suspect they were maxed out Tuning NA engines is never really cheap, but they are fun to drive when finished There are a few z22se NA engines with over 220 bhp, but you need to raise the compression ratio, fit steel rods and throttle bodies, plus a few other tweaks

[peterg]

SBD Motorsports in Kingston could do a seriously good 2.0L XE based engine , for sensible money. Someone really ought to tempt them to pick up the new 2.2L GM stuff

There's no point, Steve is way too busy putting together big power Duratecs (300bhp from the 2ltr) now on top of still producing the XE stuff and Hayabusas etc etc

Edited by peterg, 04 March 2010 - 08:34 AM.

[Phear]

S/C is the way to go and it can be done for less than £4k.

[2-20]

techie that is because none of them have made it to a rolling road.... there claims are as good as me saying i have 12 foot penis and when i get a erection i faint....

on that note, good night

Yes but they can hit the Speed limiter (not the rev limiter). I doubt you can do that with less than 200 hp on a flat road.

[Winstar]

I see lots of topics on here regarding the 2.2 NA engine. However, it seems to me that there seem to be no solutions to unlocking hp from this engine.

Has anyone made over 200 bhp for sensible money? Or for any money at all?

I have owned a big power turbo car in the past and although it was exciting, it had it's downsides which I don't want to repeat.

My preference is for linear power, no turbo lag & power building progressively towards 7,000 rpm.

Is this a possibility?

Sorry I meant to reply to you in the other thread, but the main problem with power from the 2.2 as an NA is the port design*. The ports are designed to be curved and the entrance is low compared to the exit this means that they create good tumble of the air at low engine speeds and hence good torque. However it also means that at high engine speeds they become a restriction, you can port them to improve thing but compared to other engines they don't have the height to create a stright flow path into the cylinder. It is also why the engine responds so well to FI as air speed is less important

I agree with you about the turbo cars, thats why I sold the stg 4 VXT I had and went back to my NA.

*Aledgedly GM didn't like the 'look' of the first design so they got Lotus to changed it before testing them although they had ma, when they tested them they performed brilliantly. However they'd gone so far down the road with the seconod design they couldn't go back and lets just say they where no where near as good.

[Winstar]

techie that is because none of them have made it to a rolling road.... there claims are as good as me saying i have 12 foot penis and when i get a erection i faint....

on that note, good night

Yes but they can hit the Speed limiter (not the rev limiter). I doubt you can do that with less than 200 hp on a flat road.

There is no speed limiter the speed limit will be the the rev limit in top gear, if you have enough power to get there.

[techieboy]

There is no speed limiter the speed limit will be the the rev limit in top gear, if you have enough power to get there.

I think there is a hard speed limit set in the ECU, as well as the rev limit. Something like 149mph from memory. I think Nick ran into it on the dyno with the Harrop. Can't think of many cars I'd less like to do that in than the VX though.

[2-20]

In fact there is both A rev limiter and a speed limiter. MarkV discovered it with an extended rev. limit.

[2-20]

The comments from MarkV available in this forum

No more tests since the last remap. New version is on its way though, but more on that when it arrives.

One funny thing was a problem I had when driving on the german autobahn. It felt like it hit the revelimiter in fifth gear, although the limiter is raised to 7000rpm on my map. Turned out there is a seperate speed limiter on the ECU which kicks in at 242km/h Haven't driven an unlimited version yet, but at least I now know I can get 242km/h with the current state of trim Used to be 215km/h when the car was original.

Mark

[peterg]

Hmmm, that may only be valid in mainland Europe as there is a 'gentleman's agreement' to set a limit at 155mph (roughly 250kph hence why BMW M3s and M5s have a top speed of 155mph(limited) but with a quick software update they'll do 180mph+

[Winstar]

The comments from MarkV available in this forum

No more tests since the last remap. New version is on its way though, but more on that when it arrives.

One funny thing was a problem I had when driving on the german autobahn. It felt like it hit the revelimiter in fifth gear, although the limiter is raised to 7000rpm on my map. Turned out there is a seperate speed limiter on the ECU which kicks in at 242km/h Haven't driven an unlimited version yet, but at least I now know I can get 242km/h with the current state of trim Used to be 215km/h when the car was original.

Mark

In that case I don't think you can make that assumption as the less aerodynamic standard VXT will do 151mph with 198bhp.

Sorry but I just think that it is hard to belive that there is an extra 15bhp available over the 185bhp Techi achieved by tweaking the map.

[2-20]

The comments from MarkV available in this forum

No more tests since the last remap. New version is on its way though, but more on that when it arrives.

One funny thing was a problem I had when driving on the german autobahn. It felt like it hit the revelimiter in fifth gear, although the limiter is raised to 7000rpm on my map. Turned out there is a seperate speed limiter on the ECU which kicks in at 242km/h Haven't driven an unlimited version yet, but at least I now know I can get 242km/h with the current state of trim Used to be 215km/h when the car was original.

Mark

In that case I don't think you can make that assumption as the less aerodynamic standard VXT will do 151mph with 198bhp.

Sorry but I just think that it is hard to belive that there is an extra 15bhp available over the 185bhp Techi achieved by tweaking the map.

Its more than tweaking the map...
For instance you get extra rows of cells in the fuel table to feed the engine when you go into the extended rev. range.
No other remap do that

Edited by 2-20, 04 March 2010 - 12:11 PM.

[Crazyfrog (Fab)]

trying to understand this double dutch


double quote

[alanoo]

~185 hp is "easy" and affordable to get Anything higher will mean a lot more work. I still don't believe you could get +15 hp with a remap even on those tuned engines, Give me two dyno sheets before and after from an independant dyno (not a tuner or a remap shop),and I may change my point of view