RE: Lexus IS F: Spotted

[ZX10R NIN]

Gameface said:

Can you really get another 70bhp out them? Impressive.

Which companies do this? Or is it various parts from various companies? Does it need remapping?

There are a few companies that do it all (most are in the US) but cherry pick your parts & you can get the same performance for sensible money.

Exhaust wise you need long tube Manifolds with Sports cats (or you can use the originals this costs you about 20bhp compared to the former) & then build a system that suits your sound requirements.

Yes a dyno remap after that work had been carried out would be a must.

These are a good car & I'd buy one over an E90 M3 but not a C63 but let's be honest all three are very good cars.

[Andy665]

I have been fortunate enough to do a lot of track work in both pre facelift and post facelift IS-F's - unless you are a driving god you will not get near the cars limits (but of course this is PH where everyone is exactly that) and the engine is fabulous

The cars I have driven have spent most of their life on track and apart from consumables nothing has ever gone wrong with them

[stuno1]

Gameface said:

Can you really get another 70bhp out them? Impressive.

Which companies do this? Or is it various parts from various companies? Does it need remapping?

At great cost. Down pipes back and a filter will set you back 5k ish. Not a great deal when it only relieves 70bhp. There is no way to map the cars. The ecu’s are locked down last time I was discussing this.

[ZX10R NIN]

Remapped IS-F:

https://www.youtube.com/watch?v=rCeirbQfJmA

They've now also supercharged their show car:

https://www.youtube.com/watch?v=5tDk30O7-ho

https://www.youtube.com/watch?v=fhqy3Ka8W2U

One of the things we did miss out on in the UK was the cooking IS350 which I think was a chance missed by Lexus.

Edited by ZX10R NIN on Saturday 7th April 11:10

[anonymous-user]

That noise, oh my....

[zestyfesty]

2 separate friends have an ISF. Only consumables have been brakes and tyres and regular servicing, both closing in on 100,000km.
Have driven ISF pretty extensively. Weaknesses are tall gearing and spring rate that feels just too heavy for its brief IMO. However this translates to excellent body control and a precise front and rear end on circuit or back road. Engine an utter peach, if needing revs to really haul. Disguises its weight rather well in the twisties. I have a real soft spot for them. Can’t believe one has been traded for a Mustang but to each his own!
Down under they are a rare sight, and all the better for it. You’ll sight half a dozen C63s and M3s every day of the week down here, but an ISF remains a true sleeper.

[chunder]

Gameface said:

chunder said:

Let the Yamaha designed motor breathe with aftermarket intake, headers and exhaust and you'll have 500hp, With a few cheap suspension mods (LCA bush for starters) you can sharpen the fidgety handling and you will then have an F10 M5 beater - with bulletproof reliability.

Can you really get another 70bhp out them? Impressive.

Which companies do this? Or is it various parts from various companies? Does it need remapping?

The stock exhaust is pretty restrictive - check out https://www.rr-racing.com/ - plenty of before and after dyno runs for various combinations of different manifolds and exhausts. Will require a remap if going to the larger diameter intake and MAF but they have cracked the Lexus ECU.

It is essentially the same 2UR-GSE that makes 470+ in the current F models.

Edited by chunder on Saturday 7th April 12:24

[chunder]

stuno1 said:

Gameface said:

Can you really get another 70bhp out them? Impressive.

Which companies do this? Or is it various parts from various companies? Does it need remapping?

At great cost. Down pipes back and a filter will set you back 5k ish. Not a great deal when it only relieves 70bhp. There is no way to map the cars. The ecu’s are locked down last time I was discussing this.

Sorry but that's rubbish, down pipes back can be had for under £1k, intakes incl free flow filter run from £150 upwards and the ECU has been unlocked.

[stuno1]

chunder said:

Sorry but that's rubbish, down pipes back can be had for under £1k, intakes incl free flow filter run from £150 upwards and the ECU has been unlocked.

That’s not including fitting though is it? 1-1.5k for good down pipes, 1.5k for exhaust and 500 for intake. That’s roughly 3k before fitting and the downpioes are a pig. So call it 4K all in without a map. With a map close to 4.5k all in. So.... not rubbish at all.

[Jimmy Recard]

I didn't much like them when they were new, but they've really grown on me. I think I would have one over an E90 M3 actually. I think I'd have a Jaguar XJ SuperSport if I was looking for a fast saloon in that price range though (yes, I know it's a lot bigger than this is)

[Kahnufeeleet]

I know a guy who was pretty disappointed with his IS-F after he switched from GS460 because of fairly nonexistent low RPM torque in comparison with the V8 in GS. You really have to rev the IS-F to get anything out of it. Hence it might not be the best choice for a daily.

[unsprung]

In addition to being uncommon in the UK, these are probably also sought after.

The US market has lots more, obviously, but their prices (converted to sterling) for a 2011 model in similar condition are basically the same as this.

[mrfunex]

Kahnufeeleet said:

I know a guy who was pretty disappointed with his IS-F after he switched from GS460 because of fairly nonexistent low RPM torque in comparison with the V8 in GS. You really have to rev the IS-F to get anything out of it. Hence it might not be the best choice for a daily.

What utter twaddle. It’s not a turbo, so the power delivery is pretty much linear, but having to rev it to “get anything out of it” is complete nonsense.

Anyway, aren’t revs, using the gearbox and actually driving the thing what we all want?

Edited by mrfunex on Saturday 7th April 14:06

[Heaveho]

mrfunex said:

What utter twaddle. It’s not a turbo, so the power delivery is pretty much linear, but having to rev it to “get anything out of it” is complete nonsense.

Anyway, aren’t revs, using the gearbox and actually driving the thing what we all want?

Edited by mrfunex on Saturday 7th April 14:06

Yeah, I have to say that I don't remember it being short on torque anywhere in the rev range. The car I remember for that and it came as a surprise, was the V10 M5. That seemed short on torque to me by comparison.

[stuno1]

mrfunex said:

What utter twaddle. It’s not a turbo, so the power delivery is pretty much linear, but having to rev it to “get anything out of it” is complete nonsense.

Anyway, aren’t revs, using the gearbox and actually driving the thing what we all want?

Edited by mrfunex on Saturday 7th April 14:06

Agreed, it has plenty of poke. This is the danger of people who have not driven one passing judgement. For a naturally aspirated v8 it had plenty of torque.

[Notanotherturbo]

I drove a V8 M3 on a circuit at the time I had a remapped 330d Touring. M3 felt gutless in comparison so I guess it was just what the guy was used too. I'm sure that in isolation the high revving V8s feel more than adequate low down but coming from an appreciably torquier car it can make those type of engines feel a bit flat low down.

[Kahnufeeleet]

mrfunex said:

Kahnufeeleet said:

I know a guy who was pretty disappointed with his IS-F after he switched from GS460 because of fairly nonexistent low RPM torque in comparison with the V8 in GS. You really have to rev the IS-F to get anything out of it. Hence it might not be the best choice for a daily.

What utter twaddle. It’s not a turbo, so the power delivery is pretty much linear, but having to rev it to “get anything out of it” is complete nonsense.

Anyway, aren’t revs, using the gearbox and actually driving the thing what we all want?

Are you suggesting that V8 engines cannot be designed/tuned for different torque curves e.g. more in the lower range of RPM which is typical for more luxury orientated cars like Lexus GS? Or else what's the point of your outrage?

[Heaveho]

Kahnufeeleet said:

Are you suggesting that V8 engines cannot be designed/tuned for different torque curves e.g. more in the lower range of RPM which is typical for more luxury orientated cars like Lexus GS? Or else what's the point of your outrage?

When you say " You really have to rev the IS-F ", are you speaking from experience? Because I had one for 3 years, and it wasn't my experience. I've had a lot of fast cars, so lots of things to compare it to.

[Kahnufeeleet]

Heaveho said:

Kahnufeeleet said:

Are you suggesting that V8 engines cannot be designed/tuned for different torque curves e.g. more in the lower range of RPM which is typical for more luxury orientated cars like Lexus GS? Or else what's the point of your outrage?

When you say " You really have to rev the IS-F ", are you speaking from experience?

Are people on here incapable of reading with understanding? Check my first post in this conversation, your answer is there. But please, once you realise your fail please don't comeback clutching at straws trying to deny that there are no differences between lazy NA V8's tuned for comfort and NA V8's tuned for performance. It's like claiming that the earth is flat or that there are no biological differences between women and men (but bruv do you know this for a fact? Have you really seen earth being round like? Have you ever been a woman?)

[Heaveho]

Kahnufeeleet said:

Are people on here incapable of reading with understanding? Check my first post in this conversation, your answer is there. But please, once you realise your fail please don't comeback clutching at straws trying to deny that there are no differences between lazy NA V8's tuned for comfort and NA V8's tuned for performance. It's like claiming that the earth is flat or that there are no biological differences between women and men (but bruv do you know this for a fact? Have you really seen earth being round like? Have you ever been a woman?)

You didn't own any of the cars in question, according to your first post. You also didn't make it clear as to whether or not you've ever driven them. You were reporting 2nd hand from something someone you know had said to you. I asked you if you were commenting from experience. Therefore, the answer isn't in your first post. The answer isn't in your last post either, because you still haven't made it clear as to whether or not you've actually driven the car in question.

I asked the question because I not only owned an IS-F among other Lexus models, but worked for Lexus for several years, and have a reasonable knowledge of the model line-up and the driving experiences. Your comments fly in the face of my experiences.

Had to laugh at your post after seeing you asking about the point of someone else outrage...........then you post this!

Edited by Heaveho on Saturday 7th April 17:53