Discussion
This has probably been covered many times before but i have just moved over from the tvr world to the evo and being the first turbo car i have ever had am out of my zone.
I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
If its really botherign you then you might want to look at the following:
Intake and exhaust - less backpresure should reduce lag a little
remap - increasing the ignition timing low down or before the boost hits should agian help reduce lag a tad.
Cams - seams to make the biggest difference on the EVO and not as major as it sounds.
BB turbo convertion - agian should help reduce times a little
Stroker kit - getting pretty serious now!
Anti-lag - prety good solution and some you can turn up and down.
N2O - a small shot of n2o will totaly null anf lag you have.
Just some ideas. Also get yourself over to the lancer Register. LOADS of very knowlagable guys on there that should be able to help.
Chris.
Intake and exhaust - less backpresure should reduce lag a little
remap - increasing the ignition timing low down or before the boost hits should agian help reduce lag a tad.
Cams - seams to make the biggest difference on the EVO and not as major as it sounds.
BB turbo convertion - agian should help reduce times a little
Stroker kit - getting pretty serious now!
Anti-lag - prety good solution and some you can turn up and down.
N2O - a small shot of n2o will totaly null anf lag you have.
Just some ideas. Also get yourself over to the lancer Register. LOADS of very knowlagable guys on there that should be able to help.
Chris.
When people talk about lag, there are two types which people suffer.
1) Power not coming in until xxx rpm (about 3k on the Evos).
2) When putting your foot down with the engine already above the boost threshold (over 3k on the Evo), the time taken for the boost to build up.
Number 1 you can't really do much about, but number 2 you can. I have found that fitting a decat pipe makes a huge difference to the spool up time. You will notice the boost builds much faster with a decat pipe. It also lets the car boost a little but earlier too, so power might come in a 2,800 instead of 3,000rpm. It really makes the car much more responsive.
They cost about £70 and are a doddle to fit.
Hope this helps.
1) Power not coming in until xxx rpm (about 3k on the Evos).
2) When putting your foot down with the engine already above the boost threshold (over 3k on the Evo), the time taken for the boost to build up.
Number 1 you can't really do much about, but number 2 you can. I have found that fitting a decat pipe makes a huge difference to the spool up time. You will notice the boost builds much faster with a decat pipe. It also lets the car boost a little but earlier too, so power might come in a 2,800 instead of 3,000rpm. It really makes the car much more responsive.
They cost about £70 and are a doddle to fit.
Hope this helps.
Before you throw money at the car it may also be worth experimenting with your driving, timing pedal movements slightly differently - turbos are more sensitive to this than NA cars, ie sometimes being too sharp with the clutch can bog the engine down slightly (and then have to build boost again) when slightly different timing can avoid that.
ekim said:
This has probably been covered many times before but i have just moved over from the tvr world to the evo and being the first turbo car i have ever had am out of my zone.
I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
Yep, there are two options:I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
1. Remove the turbo, as lag is simply part of how they work
2. Run an ALS, which is likely to grenade the engine and turbo if used often and regularly.
300bhp/ton said:
ekim said:
This has probably been covered many times before but i have just moved over from the tvr world to the evo and being the first turbo car i have ever had am out of my zone.
I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
Yep, there are two options:I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
1. Remove the turbo, as lag is simply part of how they work
2. Run an ALS, which is likely to grenade the engine and turbo if used often and regularly.
I think he'd rather have lag than f
k all power?
Diablos-666 said:
300bhp/ton said:
ekim said:
This has probably been covered many times before but i have just moved over from the tvr world to the evo and being the first turbo car i have ever had am out of my zone.
I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
Yep, there are two options:I have got a totally standard evo 8 mr fq300 and i love the car and would like to keep it as standard as possible as its such a good example but i do find that if you push it hard then change gear there is quite a lot of lag.
Is there a simple fix for this without having to go down the chip and remap route?
1. Remove the turbo, as lag is simply part of how they work
2. Run an ALS, which is likely to grenade the engine and turbo if used often and regularly.
I think he'd rather have lag than f
k all power?
It wasn't a serious suggestion...... But one that would remove lag. Any turbo car without ALS has lag, yes sometimes less evident, but it's still there. If the OP has come from a n/a TVR, then they will be used to very sharpe instant throttle control. You'll never get this on a street friendly turbo setup.
Diablos-666 said:
Sorry didn't realise you wasn't being serious, normally when you're trying to be funny you mention some sort of American lump 
2 smaller turbos would eradicate the lag also...
2 turbos on an inline 4?? Pretty rare and I'd have thought complex to plumb in. Also not sure LAG would truly be less. Not if you are boosting the same level with similar HP targets.2 smaller turbos would eradicate the lag also...
1 turbo = gases from 4 cylinders to power it
2 turbos = gases from 2 cylinders to power each
So a turbo half the size maybe, but with only half the energy powering it.
Two small turbos will spool faster than one big one, its physics! Rotating mass/inertia etc. My 2.0 (flat not inline) twin-turbo makes boost from under 2000rpm through to 7500+ 
buts thats sequential turbos for you, different again (and yes you're right about complicated plumbing).
Modern turbos (especially twinscrolls) are much better than old ones too though.
buts thats sequential turbos for you, different again (and yes you're right about complicated plumbing).Modern turbos (especially twinscrolls) are much better than old ones too though.
Edited by GravelBen on Thursday 9th September 10:24
Shinobi said:
lancerregister.com, very knowledgable site and some of the advice posted here isnt really applicable to Evo 8's. I've had a few and not experienced any lag if going up through the gears and changing around 6k.
lol, you might not have "noticed" it but it exists, if it didn't ALS systems wouldn't exist.300bhp/ton said:
Diablos-666 said:
Sorry didn't realise you wasn't being serious, normally when you're trying to be funny you mention some sort of American lump
2 smaller turbos would eradicate the lag also...
2 turbos on an inline 4?? Pretty rare and I'd have thought complex to plumb in. Also not sure LAG would truly be less. Not if you are boosting the same level with similar HP targets.2 smaller turbos would eradicate the lag also...
1 turbo = gases from 4 cylinders to power it
2 turbos = gases from 2 cylinders to power each
So a turbo half the size maybe, but with only half the energy powering it.
LaurenceFrost said:
When people talk about lag, there are two types which people suffer.
1) Power not coming in until xxx rpm (about 3k on the Evos).
2) When putting your foot down with the engine already above the boost threshold (over 3k on the Evo), the time taken for the boost to build up.
Number 1 you can't really do much about, but number 2 you can. I have found that fitting a decat pipe makes a huge difference to the spool up time. You will notice the boost builds much faster with a decat pipe. It also lets the car boost a little but earlier too, so power might come in a 2,800 instead of 3,000rpm. It really makes the car much more responsive.
They cost about £70 and are a doddle to fit.
Hope this helps.
Indeed. ^this is a sensible post.1) Power not coming in until xxx rpm (about 3k on the Evos).
2) When putting your foot down with the engine already above the boost threshold (over 3k on the Evo), the time taken for the boost to build up.
Number 1 you can't really do much about, but number 2 you can. I have found that fitting a decat pipe makes a huge difference to the spool up time. You will notice the boost builds much faster with a decat pipe. It also lets the car boost a little but earlier too, so power might come in a 2,800 instead of 3,000rpm. It really makes the car much more responsive.
They cost about £70 and are a doddle to fit.
Hope this helps.
There's 2 issues that people confuse but the above poster has right.
1 is BOOST THRESHOLD
2 is TURBO LAG
So long as you keep the revs over 3,250rpm then you're above the boost threshold on the stock turbo. So I suggest you get used to shifting above 6,000rpm to keep above 3,250 in the next gear.
The stock turbo on the 8 MR FQ300 shouldn't be that laggy if you drive it properly; if you're looking for an overtake you'll need to shift down to get the revs over 3,500 and then when it's time to go you may want to go for the throttle a fraction earlier than in a N/A car, to allow the turbo to spin up as you move across to overtake. So you can go fast from a rolling start using this technique, you can go fast through the gears by shifting at the top each gear. So that only leaves fast from a standstill - well to do this you need to be pretty brutal with the clutch and I don't reccomend it anyway.
HTH
mrmr96 said:
liner33 said:
Does it have a stock dump valve ??
All this talk of twin turbos , some people would have you spend £1000's
All Evo's had a dump valve as standard.All this talk of twin turbos , some people would have you spend £1000's
A VTA DV can make the car fall on its face on shifts
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