how to get turbo to spool later?

[gstxtt]

I am new to the whole turbo thing so I don't know that much. So I was wondering what could I do to make my boost come on a little later somewhere around 4500 RPM's without buying a manifold with different length runners or a different turbo. I'd like to make as much power as i can n/a until the boost and switching gears at 2200 just isn't gonna work. so what can I do to change when the boost comes on? Any help would be appreciated, Thanks! (and i cannot post in the turbo section in the forums which is why im posting here)

 

[boostngsx]

Get an atmosphere vented O2 housing. That will help your turbo spool a little quicker. Also a solid intake pipe would help too.

 

[someguyonline]

bigger exhaust, remove the cat, backpressure is the enemy. some tuning couldn't hurt either

 

[knochgoon24]

Why would you want the turbo to spool LATER? DSMs are fat cows until the turbo spools up.

 

[gstxtt]

because gas is expensive. plus ill be doing a 4g64 bottom end swap soon so more torque. and being in boost going 70 down the highway is in no way efficient.

im not sure what your asking....Are you saying you want your turbo to spool at rpms higher then 4500

yeah i would like it to spool no earlier then 4500rpms or later

 

[98GSXtreme07]

Get an atmosphere vented O2 housing. That will help your turbo spool a little quicker. Also a solid intake pipe would help too.

bigger exhaust, remove the cat, backpressure is the enemy. some tuning couldn't hurt either

Guess yall missed the part where he's asking for it to spool <b>later</b>. Bigger turbo is all I can think of but I know thats not what you want.

You need to update your profile. What kind of turbo are you running? Stock T-25? I'm not sure how your in boost while doing 70?

 

[pj91gsx]

yeah i would like it to spool no earlier then 4500rpms or later

Porting the manifold really big with make your turbo spool later. my friends spools around late 3000 early 4000. We didnt really want that though. If you port the head out a lot then you will see later spool but I wouldnt do more than a port match to the head especially if this if you going to sell the car later. port out the turbo and the o2 housing. there is a lot of porting that can be done. I dont understand why you have this car if you want good gas mileage. Though some guys on here get over 30 mpgs with bigger turbos when they stay off he pedal.

 

[JMiller]

instead of making it hit boost later, why dont you set the boost really low.Possibly with an EBC so if you decide you want to show or whatever you can instantly change it back.

 

[droppinbottom]

Adjusting your cams can change spool characteristics, adding a large cam will work also.

 

[propeine]

Don't push the gas pedal so hard. Disconnect your wastegate actuator. I know the feeling about gas prices. I'd just say go to a bigger turbo even though you said you don't want to. You'll see boost later for around town efficiency and make more power when you do push the go pedal.

 

[gstxtt]

Porting the manifold really big with make your turbo spool later. my friends spools around late 3000 early 4000. We didnt really want that though. If you port the head out a lot then you will see later spool but I wouldnt do more than a port match to the head especially if this if you going to sell the car later. port out the turbo and the o2 housing. there is a lot of porting that can be done. I dont understand why you have this car if you want good gas mileage. Though some guys on here get over 30 mpgs with bigger turbos when they stay off he pedal.

thanks. hah i dont really want good gas mileage just something better then the 17 im getting. plus id like to build it n/a like i said. i think that the car should be exciting out of the boost alsoso thats what im aiming for..i probably wont get any better gas mileage if i build it n/a

 

[soldave]

Adjusting your cams can change spool characteristics, adding a large cam will work also.

But if his complaint is he wants to save on gas money then a larger cam will make the car less economical, won't it?

 

[V8KillerTSi]

Get a bigger than stock turbo and keep the throttle below 30%.

 

[diatenshi]

Higher compression pistons will give you better off boost performance, but you wont be able to run as much boost with out knocking.

 

[propeine]

If you want to build an NA get rid of the turbo all together and run high compression pistons. Thats something I never heard anyone try to do. I've heard faster spool but not 4500rpm spool and off boost performance together.

 

[->PrOjEcTGS<-]

Control your right foot...

 

[knochgoon24]

I'm getting about 20 mpg in the city. It's all about how your foot meets the pedal. Easy on, easy off. Braking is wasted gas. Just give yourself an extra 5 min and drive easy.

 

[gstxtt]

i dont think anyone understands its at half boost a 2000 rpms and full at 2200 and i don't like shifting that low and regardless of how depressed my foot is on the gas the turbo wants to spool. so i dont know.... just tryin to figure it out....maybe it'll be different after i get the 2.4 bottom end.and id rather not go the route of the gs with naturally aspirated or set my boost low id like to have the turbo there right when i need it.

 

[->PrOjEcTGS<-]

Maybe your wastegate is sticking closed not allowing for boost control.

 

[No_Skillz]

If you're only getting 17mpg I'm more concerned that there is something wrong with your car. I drive mine fairly agressively and get almost 30mpg.

What maintenence have you done recently?

 

[->PrOjEcTGS<-]

Wait wait wait.... Do you have an aftemarket boost gauge? If you are basing all of your information off of the stock gauge. Don't...

 

[Freerevving]

clip your turbo, or get a bigger one... or just buy a honda civic and it'll have the kind of acceleration you're looking for, you'll probably save a lot of money that way too...

I think your plan is crazy and you won't like it

 

[gstxtt]

ill tell you all how it works out when i get it all finished. im probably gonna go with a bigger turbo.... as much as id like my stock turbo to spool at 4500 instead of 2200 it dosent look like anyone knows how to make it happen. and no a honda civic will not work and in no way would be the same.i might just leave it alone or go for a 16g and not care about the gas. or ill just figure out hat the problem is since everyone else gets great gas mileage. they all sound like good ideas to me oh and off topic a little how bad would the MAF honeycombs affect gas mileage?

 

[No_Skillz]

Wait wait wait.... Do you have an aftemarket boost gauge? If you are basing all of your information off of the stock gauge. Don't...

Right on the money. The stock boost gauge gives you an estimate of boost from what it sees at the MAF. If you don't have an aftermarket boost gauge, you really don't know when or how your turbo is spooling.

Only thing is, the higher your stock gauge goes, the more fuel you are dumping into the cylinders. If that fuel doesn't have the correct amount of air to mix with (e.g. boost leak) then you will suffer from horrible gas mileage and no power.

No aftermarket boost gauge? Fine. But:

Do a BLT.

 

[gstxtt]

Right on the money. The stock boost gauge gives you an estimate of boost from what it sees at the MAF. If you don't have an aftermarket boost gauge, you really don't know when or how your turbo is spooling.

Only thing is, the higher your stock gauge goes, the more fuel you are dumping into the cylinders. If that fuel doesn't have the correct amount of air to mix with (e.g. boost leak) then you will suffer from horrible gas mileage and no power.

No aftermarket boost gauge? Fine. But:

Do a BLT.

no no aftermarket gauge. but im pretty sure that i can hear and feel when my boost comes on and thats what ive observed. #### gas mileage at this point id just like to not have my boost come on so early.
actually i dont really care it was just an idea that i figured if i didnt have to go spend 600$+ on big turbo that i was gonna try. and i have 1 boost leak that i know that i havent taken time to fix but how would that make my turbo spool earlier?