[mkiv] Lost substantial amount of power

Mon Oct 22 15:35:49 CDT 2007

lower egts are good too

Ryan Hanson
800.296.6560

www.NEdrift.com
www.NEADdyno.com
www.GramLights.com
www.ForPerformance.com


NEAD LLC.
4 Delta Dr.
Westbrook ME. 04092
Tel:  207.854.2354
Fax: 207.854.2429
----- Original Message ----- 
From: "Ryan Hanson" <rhanson at maine.rr.com>
To: "The MKIV.com National Mailing List" <mkiv at mkiv.com>
Sent: Monday, October 22, 2007 11:05 AM
Subject: Re: [mkiv] Lost substantial amount of power


> Sno performance makes the best kits imho...  Boost cooler kit cools the 
> charge when boost comes in adding the dense cool air your looking for....
>
> Ryan Hanson
> 800.296.6560
>
> www.NEdrift.com
> www.NEADdyno.com
> www.GramLights.com
> www.ForPerformance.com
>
>
> NEAD LLC.
> 4 Delta Dr.
> Westbrook ME. 04092
> Tel:  207.854.2354
> Fax: 207.854.2429
> ----- Original Message ----- 
> From: "Jake" <JakeGrafton at gmx.de>
> To: "The MKIV.com National Mailing List" <mkiv at mkiv.com>
> Sent: Monday, October 22, 2007 10:25 AM
> Subject: Re: [mkiv] Lost substantial amount of power
>
>
>> Honestly I cant really believe ambient temperature alone makes such a 
>> huge difference.
>> As I said, I noticed powerloss on hot days before (and noticing a power 
>> gain at night), but it was never that bad. And I also thought it was 
>> mostly because of my clogged up intercooler (which got changed now).
>> It really drives me insane to see less power with a not-clogged-up 
>> intercooler.
>>
>> So I really dont know what to do. I didnt reset the ECU, so its not that. 
>> Low octane fuel is not the problem either. I dont see overheating either. 
>> Oil temps are fine.
>> I even tried running with the stock air box again, because I thought my 
>> air filter is sucking too much warm air. Didnt help either.
>>
>> Youre talking about a Methanol/Water injection? How do those work?
>>
>> Jake
>> 94TT 6SPD
>>
>> ----- Original Message ----- 
>> From: "John Cribb" <johnacribb at yahoo.com>
>> To: "'The MKIV.com National Mailing List'" <mkiv at mkiv.com>
>> Sent: Monday, 22 October, 2007 14:14
>> Subject: RE: [mkiv] Lost substantial amount of power
>>
>>
>>> Jake, if you're sure it's only the ambient temperature change that was
>>> responsible for the power increase, then you might want to consider a 
>>> M/W
>>> injection kit to keep your intake air temps down.
>>>
>>> Other things that could have affected the power are retarded timing due 
>>> to
>>> low octane fuel or overheating - perhaps with your other work you've 
>>> reset
>>> the ECU and it's starting over again with fresh learned settings?
>>>
>>> But it's true, our motors definitely like the cool weather better than 
>>> the
>>> hot.
>>>
>>> John
>>> '97 APU
>>> '94 BPU
>>>
>>> -----Original Message-----
>>> From: mkiv-bounces at mkiv.com [mailto:mkiv-bounces at mkiv.com] On Behalf Of 
>>> Jake
>>> Sent: Monday, October 22, 2007 5:38 AM
>>> To: The MKIV.com National Mailing List
>>> Subject: Re: [mkiv] Lost substantial amount of power
>>>
>>>
>>> Alright, I think I found the cause for power loss on my Supra. As 
>>> someone
>>> already suggested, its the ambient temperature, how wierd it may
>>> sound.
>>> I was normally driving at 77 to 86F when I had low power, but yesterday 
>>> I
>>> drove at about 42-50F. The difference was HUGE. The car pulled like mad
>>> again, so that I actually got a little scared at times, since I wasnt 
>>> used
>>> to so much power anymore. I would guess it was at least 30-40 HP more 
>>> than
>>> before.
>>> Ive had my car for 8 years now, and also noticed power loss on very hot
>>> weater before, but it was never this bad.
>>>
>>> Now, I changed my stock intercooler just before I got that power loss,
>>> because my old one was completely clogged up with insects, dirt, etc. I
>>> bought a used one, which still looked very good. So actually I should 
>>> have
>>> much less problems with high intake temperature.
>>> But why is it worse now? :(
>>>
>>> Is it really normal to lose so much power to ambient temperature? What 
>>> can I
>>>
>>> do to counter it?
>>> A FMIC would be the last option for me, since I would have to get a 
>>> custom
>>> one done due to the european active spoiler taking up space.
>>>
>>> Thanks
>>>
>>> Jake
>>> 94TT 6SPD
>>>
>>> ----- Original Message ----- 
>>> From: "George Datuashvili" <gdatuashvili at gmail.com>
>>> To: "The MKIV.com National Mailing List" <mkiv at mkiv.com>
>>> Sent: Saturday, 15 September, 2007 21:16
>>> Subject: Re: [mkiv] Lost substantial amount of power
>>>
>>>
>>>> I don't think it's old cat.
>>>> When was the lat time you changed the fuel filter?
>>>>
>>>> Some more ideas:
>>>> - spark plugs
>>>> - coil packs
>>>> - bad fuel pump
>>>> - bad fuel (try different gas station & brand)
>>>> - boost leak (where exactly is your sensor mounted that shows 1.1bar?)
>>>> - conspiracy theory (porschas you raced have more power than owners
>>>> disclosed)
>>>>
>>>>
>>>>
>>>> On 9/15/07, Jake <JakeGrafton at gmx.de> wrote:
>>>>>
>>>>> Hi guys,
>>>>> it looks like my Supra has lost quite some power recently. I didnt
>>>>> really notice it until I was only dead-even with several 325 HP
>>>>> Porsches. I should have owned them bad.
>>>>> Now, the turbos are boosting fine, the engine runs smooth, is not even
>>>>> burning much oil and everything else seems to be in order. I am 
>>>>> running
>>>>> 1.1 bar with the stock cats installed right now. But I was able to 
>>>>> beat
>>>>> Porsches like that before with this setup.
>>>>> So what could be the problem? I heard it could be either caused by a
>>>>> dirty
>>>>> fuel filter, a bad MAF or a defective cat. Is that true?
>>>>> All 3 possibilities could very well be the cause. In the last few 
>>>>> weeks I
>>>>> have been running my car very, very often with low fuel. That could 
>>>>> mean
>>>>> a
>>>>> dirty fuel filter, IIRC.
>>>>>
>>>>> I have also used a Blitz SUS air filter, which wasnt cleaning the air
>>>>> very
>>>>> good (there was slight dirt inside the intake pipes, so the MAF could 
>>>>> be
>>>>> faulty from all this dirt.
>>>>>
>>>>> And last but not least my cat is very old. It has seen lots of use
>>>>> and high EGTs so it could also be that its defective, also because my
>>>>> EGCV failed a few months ago (it got replaced a few weeks before I
>>>>> noticed the loss in power).
>>>>>
>>>>> The question now is, how do I test the MAF for normal function? Where
>>>>> is the fuel filter located and how do I see if its dirty or not?
>>>>>
>>>>> Anyone know any other possible causes that could steal me like 30-60
>>>>> HP?
>>>>>
>>>>> Thanks a lot in advance!
>>>>>
>>>>> Jake
>>>>> 94TT
>>>>> _______________________________________________
>>>>> Mkiv mailing list
>>>>> Mkiv at mkiv.com
>>>>> http://www.mkiv.com/mailman/listinfo/mkiv
>>>>>
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