SGTSAT

Well i rencently decided to mod my 8,and went to the dyno to get a baseline hp read to start my proyect and i got this, 136WHP and the max torque was 126.05 after going to a mazda dealer for service told them about loss of power and idle problems they find out a problem with the electronic trottle and it got replaced went to the dyno again and got 2 more WHP but the same idle problem and vibration .Does anyone has the same results on a dyno or any of you think that i got a little problem with my car.One think i notice it was that is running rich as a pig.But i think it may have something else.Any help will be highly appreciatted. It is an 2005 AT 8

mysql101

you didnt post the dyno, or mention which year AT you own.

nycgps

iTrader: (1)

Why am I not surprised ...

AT ...

R888

Get the inter-X for stable 150WHP, I am thinking of the HKS AMP TWIN POWER as well, spark plug, Nology wires and optima battery, intake and exhaust.

Sure it will get you to 160WHP. Thats what I am doing..

If you need to go over 200WHP, then FI must be.

invasion08

iTrader: (7)

If you dont mind spending alittle cash Mazsport's spark plug wires and Mazsport's new ignition coils and also there cooling mod. I had nology hotwires and at high rpms had a problem. The Int-x tunedright will give you 20-30 rwhp on a N/A car.

R888

whts the problem on the nology wires? I am going for the HKS TWIN Power asap and then the Denso spark plugs in order to combine my setup of Nology wires and the yellow top optima battery.

The only problem I have is when I am at high rpms in a hot weather, the coolant light went on, but when I shift to the next gear and the rpm dropped the coolant lights went off.

Wierd, eh?

chetrickerman

some AT 8's have been failing in hot weather

invasion08

iTrader: (7)

When Scott from Mazsport tuned my 8 i had nology wires on then i switched to his wires and gained over 10 rwhp. At high rpms on the dyno they would cut out, trust me i have seen the difference first hand. Call Mazsport up asap they have new ignition coils that i hear are awesome and worth every penny. Also buy Mazsports cooling mod it will keep the car running cooler.

chetrickerman

i havent seen the new coils up on their page, but im sure if i ask him he will tell me. good wires are essential to good engine performance along with the coils and plugs

staticlag

https://www.rx8club.com/series-i-major-horsepower-upgrades-93/diy-how-dyno-rx8-132083/

SGTSAT

When i bought the car, i dynoed and it was giving like 169HP to the wheels and now this,i am considering real serious to get rid of it.It had been giving me more problems that service and with the custumer support in PR from mazda and dealership its going to be uphill to find someone who really understand the problem.And be willing to help.So far ive been in two different dealers and the are just as bad as they can be with the warranty and costumer support.

tajabaho1

plugs, wires, coils, also check air filter, clean MAF sensor if needed,

if all else fails, u might want to get a compression check

SGTSAT

The same happened to my car,just add coolant or water it will go away,seems that at high rpm the cooling system tend to create bubbles.I just added a little bit of cooland and the light was gone for good.

SGTSAT

Thanks will work on it tomorow morning.

SGTSAT

My car doesnt have DSC do i have to pull the abs fuse too to dyno my car.Its 2005 brilliant black AT

tajabaho1

base model ATs don't have DSC/TSC........you're fine, don't need to pull fuses or anything to dyno it, I've done it buncha times

looking at ur graph, it looks like the car is stalling, or something the higher the rpm goes, have u changed your air filter yet?

SGTSAT

Yes air filter new oil and i went o the dealer and complaint about the loss of power and idle vibration they chacked the car and told me that was the throttle and was replaced,i did felt some change but now it vibrates more in idle with the AC on.I just bought new spark plugs and going to buy the nology cables.I got my emanage ultimate waiting to be installed but wont do it until i get things done with this problem.Tomorrow i will check the MAF sensor .

mdw1000

The Mazmart water pump is designed to get rid of those bubbles. The OEM pump design doesn't do well at high rpms, and the flow tends to break down.

invasion08

iTrader: (7)

Nology wires are a waste of money trust me i had them on. If you want good spark plug wires get Mazsport's http://www.mazsport.net/store/index....ct_detail&p=19

SGTSAT

Thanks im on it right now

sosonic

It makes no sense for an AT to be testing so low on HP. Your AT is rated at around 195HP. 6speed ATs at 210HP. By the way, JDM RX-8s @ 210HP even for 4ATs.

Anything less than 150WHP means there is some serious bad issues going on. It is very possible to get 175WHP and more out of the ATs, though you will see a lot of 160WHP.

You should demand the situation be corrected from Mazda, as this performance is far under their HP claim.

I also agree you should be checking things with them:

. Coolant

. Oil

. Plugs

. Plug wires

. Coils

. Air filter

. MAF sensor

. Do you need a 2nd oil cooler?

. compression check

SGTSAT

Can you direct me to someone who had complain to mazda about this problem and and how to get hold of someone at mazda or maybe how to start to move this with them,the dealers here are a pain in the a$$ to worked with.Any regulation ,law ,or any mazda paperwork related to this matter of low power.

sosonic

1st, you need to check in with your Mazda dealer and see what is wrong with your car. There is no point in going further, until a mechanic has told you, "all that could be done has been done".

fd3s777

iTrader: (2)

Just dyno my 8 with greddy turbo kit at 218 HP... its a 4AT. But feeling the tranny is not griping at high RPM. When I punch the gas peddle at 5000 RPM it sliped and jumped to 7000 RPM fast.

invasion08

iTrader: (7)

i dont know how close you are to NJ but Level Ten in Hamburg NJ will give you a sick custom built transmission. I had my transmission done there and it is basicly a bulletproof tranny that can handle up to 1000hp