HP Thread. Not Mileage or Fuel Cost.

[bornchevy]

Here is an article about the new 2.0T Malibu with a bit more technical information than usual. If you read the 4th paragraph you'll notice low grade fuel gives a drop of 20hp in this engine.

2013 Chevrolet Malibu Turbo First Drive – Malibu Turbo Price and Performance Impressions – RoadandTrack.com - Road & Track

My question is.. exactly how much hp do we lose in the 1.4T with low grade fuel??! I've noticed performance is significantly better with premium fuel and also I get about 2 mpg better all round.

Is it possible the 1.4T loses 10-20 hp with low grade fuel? If so this is very significant considering it lists 138 hp as max (I'm assuming that is with premium fuel).

I'm still curious if anyone has exact HP numbers they can verify or if maybe Chevy can respond with exact HP numbers?

This thread focuses on hp and NOT mileage.

If anyone has actually posted dyno numbers in a thread then I apologize as I must have missed them.

 

[ThatTmoGuy]

No one has posted dyno numbers from fuel changes. This still falls under the octane showdown as all of this including that article has been discussed in great length. I know reading 20+ pages sucks but how else do you learn? I'm sorry to say this but this is the exact same thing you just posted and I'm sure this will be locked as well. Try asking this question in that thread since you don't seem like you want to read it for yourself.

 

[bornchevy]

No one has posted dyno numbers from fuel changes. This still falls under the octane showdown as all of this including that article has been discussed in great length. I know reading 20+ pages sucks but how else do you learn? I'm sorry to say this but this is the exact same thing you just posted and I'm sure this will be locked as well. Try asking this question in that thread since you don't seem like you want to read it for yourself.

I have read that post thoroughly and appreciate your point. However, I also know that I couldn't care less about mileage and would like a thread that focuses on hp/trq.

Maybe we will get a response from Chevy if we don't bury questions in threads that are 20+ pages long?

 

[ChrisJ]

Maybe we will get a response from Chevy if we don't bury questions in threads that are 20+ pages long?

Yeah, good luck with that.

 

[ThatTmoGuy]

Last thoughts?

 

[$ub$onic]

I'm going to say it will not be long before this is locked


The sonic has a 12.5 gallon tank. On avg you run it down 9-10 gallons. Premium is what 10-15 cents more. So your going to put a extra $1-$1.50 in the tank. If it worry you that much just pay the extra dollar.

 

[bornchevy]

Yeah, good luck with that.

Road and Track received a good response when discussing the 2.0T Malibu. Maybe someone can come through here. I know some of the people on this forum have connections inside Chevy. Also we have cust serv reps on this forum. Maybe they can contact an engineer and get an answer?

 

[bornchevy]

I'm going to say it will not be long before this is locked


The sonic has a 12.5 gallon tank. On avg you run it down 9-10 gallons. Premium is what 10-15 cents more. So your going to put a extra $1-$1.50 in the tank. If it worry you that much just pay the extra dollar.

Thanks for your response. However, this is exactly what I DON'T want in this thread. I'll say again. The instrument has yet to be invented that can measure how much I DO NOT CARE about fuel mileage or fuel cost!!

I'm looking for anyone with information about verified hp differences when running the two fuels. After reading the article about the 2.0T Malibu I realized I had no idea the hp difference would be that high..

 

[bornchevy]

Last thoughts?

I usually appreciate your posts but if you can't contribute then please don't post.

Thanks

 

[laborsmith]

The 1.4T generally dynos 116whp. The only person I have heard of who dynoed with no performance upgrade (other than coilovers) is JusticePete and if a recall correctly he got 125 on a hot Texas day. You would need to go into his Camaro5 Grand Sport build thread to get more info but around 9 or 10 HP seems correct to me.

The 138 at the crank would have been done using regular (87) fuel as that is the grade Chevy lists as recommended.



Laborsmith

 

[bornchevy]

Wow.. Thanks laborsmith. That is exactly the information I was looking for.

I also didn't realize the factory dyno numbers would be with recommended fuel instead of "best performance".

So it would be safe to say that just using premium fuel would give this engine approximately 10+ hp at the crank.

And for those who are wondering.. I am now searching the thread referenced in laborsmith's post.

 

[$ub$onic]

Thanks for your response. However, this is exactly what I DON'T want in this thread. I'll say again. The instrument has yet to be invented that can measure how much I DO NOT CARE about fuel mileage or fuel cost!!

I'm looking for anyone with information about verified hp differences when running the two fuels. After reading the article about the 2.0T Malibu I realized I had no idea the hp difference would be that high..

Did I say anything at all about fuel economy? No I did not. We all know for a fact that they run better on 91-93 octane most car company's test at regular gas unless it has to run premium. I said if the HP loss worry you that much then pay the extra. And since fuel price is not a issue apparently, just put the highest grade you want in it.

 

[bornchevy]

The 1.4T generally dynos 116whp. The only person I have heard of who dynoed with no performance upgrade (other than coilovers) is JusticePete and if a recall correctly he got 125 on a hot Texas day. You would need to go into his Camaro5 Grand Sport build thread to get more info but around 9 or 10 HP seems correct to me.

The 138 at the crank would have been done using regular (87) fuel as that is the grade Chevy lists as recommended.



Laborsmith

I read the referenced thread but most of the pics were gone and it didn't mention any hp numbers. I could have been looking at the wrong thread but it was justicepete building a sonic at the camaro5 forums if that is right?

 

[laborsmith]

That is right. It may have been in his build thread here, but what is more likely, now that I think of it, is it might be in the Shnomac House of Z thread, which has thousands of posts. Pretty sure there was more than one reference to that dyno session so I am pretty sure I will find at least one.

Needle in a haystack anyone?


Laborsmith

 

[cndctrdj]

Bone stock 132hp and 138tq on 93

And as a point of reference cars usually gain or lose 7 hp per degree of timing. So figure out in an ultragauge how many degrees the car is dropping when switched to 87 and that will give you a very close number

 

[bornchevy]

Found some dyno info in a ddmworks thread but the graph pic is gone

nothing else yet as I read through page 372 in Shno's thread..

 

[bornchevy]

Bone stock 132hp and 138tq on 93

And as a point of reference cars usually gain or lose 7 hp per degree of timing. So figure out in an ultragauge how many degrees the car is dropping when switched to 87 and that will give you a very close number

Sweet info.

Did you get those power numbers at wheels or crank or from documents?

 

[ChrisJ]

Bone stock 132hp and 138tq on 93

And as a point of reference cars usually gain or lose 7 hp per degree of timing. So figure out in an ultragauge how many degrees the car is dropping when switched to 87 and that will give you a very close number

That seems kind of impossible to use as a statement on all cars. And by all I mean pretty much any, theres too much to effect this.

For example, and this is an exaggeration, a 10HP engine isn't going to gain 7hp from 1 degree of timing advance. Obviously a 1000HP engine will gain more than a 100HP one.

 

[bornchevy]

btw laborsmith.. what did you think about JusticePete's statement that GM has the airbox to MAF dialed in? He said he had better numbers with stock air box all other things equal. I see a lot of people adding CAI's.

 

[bornchevy]

That seems kind of impossible to use as a statement on all cars. And by all I mean pretty much any, theres too much to effect this.

For example, and this is an exaggeration, a 10HP engine isn't going to gain 7hp from 1 degree of timing advance. Obviously a 1000HP engine will gain more than a 100HP one.

His statement does sound pretty generalized. Although, he did say "cars" and I highly doubt you will find a 10hp motor in a car?