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pause before power band???

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shakey
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Postby shakey » Sat Apr 05, 2008 2:59 am

Mr. Tezza wrote:do you have an induction kit

yup have a full hks suction induction system. would that cause a problem???

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Dan
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Postby Dan » Sat Apr 05, 2008 11:32 am

definitely unless you air fuel ratio has been remapped to suit but fitting an Apexi SAFC or similar, if you can go back to standard setup if you still have the old box

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james1485
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Postby james1485 » Sat Apr 05, 2008 4:39 pm

cleaned it todayand its still doing the same. is there anything else that it could be? :evil:

Moe
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Postby Moe » Sun Apr 06, 2008 3:43 am

I reckon it's got a lot to do with the fuel grade we have here. The engine in the Altezza seems to be very fussy with petrol quality, more so than other JDM's. TBH I think it is an overated engine, in standard form, unless you like revving the nuts off it all the time...

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Robin H
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Postby Robin H » Sun Apr 06, 2008 4:37 pm

get your car on a dyno and look at how the fueling is

I had a similar problem with my tezza when I 1st got it, there was a dip in power around 4000/4500rpm couldn't really feel it when accelerating up through the gears, but could be felt when cruising and accelerating up slowly.

it turned out to be a problem with the fuel pump, so I would look at your fueling system as well

Rob
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Postby Rob » Sun Apr 06, 2008 9:55 pm

Cleaned the MAF sensor and it seems to have made quite a difference. No more hesitation or spluttering any more. Dead easy to do, one bolt and two screws and a couple of blasts of contact cleaner. A damn sight easier than changing coilovers - at least the weekend wasn't a total loss. :?

R.

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Duffer
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Postby Duffer » Mon Apr 07, 2008 10:05 am

A mate of mine had his altezza up in ai motorsport and it got 210bhp with a full exhaust system, but on the read out the fuelling was all over the place, the lads up there said it needed to be remapped badly, i have an altezza to and it does the same thing between 4000 rpm and 5000 rpm.

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feeler
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Postby feeler » Mon Apr 07, 2008 10:33 am

must give this a go. where would i pick up some contact cleaner.

Rob
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Postby Rob » Mon Apr 07, 2008 10:36 am

feeler wrote:must give this a go. where would i pick up some contact cleaner.


Maplin has it, or possibly some other electronics shop. It's important that it's residue free.

R.

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feeler
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Postby feeler » Mon Apr 07, 2008 11:00 am

Rob wrote:
feeler wrote:must give this a go. where would i pick up some contact cleaner.


Maplin has it, or possibly some other electronics shop. It's important that it's residue free.

R.
thanks i'll pick some up the next time i'll in maplin.

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alimac
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Postby alimac » Mon Apr 07, 2008 11:00 am

CRC make a MAF sensor cleaner
98 RS200z 6MT

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james1485
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Postby james1485 » Tue Apr 08, 2008 9:44 pm

Robin H wrote:get your car on a dyno and look at how the fueling is

I had a similar problem with my tezza when I 1st got it, there was a dip in power around 4000/4500rpm couldn't really feel it when accelerating up through the gears, but could be felt when cruising and accelerating up slowly.

it turned out to be a problem with the fuel pump, so I would look at your fueling system as well


mine is fine when accelerating easy but its when i put the boot down it shutters abit. getting it put on the computer to see if anything comes up.

i will update if i find out what the crack is.

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james1485
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Postby james1485 » Wed Apr 16, 2008 3:51 pm

rite guys i used contact cleaner to start of with but later discovered it left a resin :oops:

i went and bought a new air flow sensor £111 of Toyota yesterday coz i thought the old 1 was f***. last nite just before i put it in i relaised about the oily resin the contact cleaner left so i then got brake and clutch cleaner and blasted the s@3! out of the old sensor, then tried it............

Happy Days it worked. got my money back from toyota aswell.

so now the car is like new.

i know, i was thick as F**K :lol:

but sure i got there in the end.

decyboy
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Re: pause before power band???

Postby decyboy » Fri Apr 18, 2008 2:37 pm

dc5altezza wrote:has anyone else had any weird problems with the acceleration seeming to pause slightly jsu goin into the vvti at 5k rpm.... really annoying cant figure out whats up....

ya mines doin the same....might try cleanin that sensor when i get chance....
round n round she goes!!!!!!!!!

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dc5altezza
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Postby dc5altezza » Fri May 02, 2008 4:35 pm

seen as i started this might as well reply. went to toyota and got a brand new maf sensor like €140 or sumtin but oh my god the diff it makes. the car is like new. contact cleaner is a temp solution. jus replace it you'll be amazed the difference


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