I just had my 01 prelude dyno tuned by inline pro in springfield va, (supposed to be the best around) I'm running a greddy turbo on 8lbs of boost on a stock motor with a Hondata S300 3 inch downpipe and 2.5in exhaust with high flow cat that I punched. The car has a front mount intercooler and type s blow off valve. I only made 218 hp isnt this kinda low???? I was expecting 230-240 with the hondata hooked up. The custom exhaust is welded the entire way back from the downpipe to the muffler but its a small magnaflow muffler, do you guys think this small muffler could be killing the power?? I was going to get a hondata heat gasket but they said the gaskets are crap and they tested them on their race cars and they melt down after one race season, with the flanges sticking into the intake manifold actually loosing power once this occurs! Any suggestions here to put down more power besides running more boost.

 

https://honda-tech.com/zerothread?id=1743644

 

exactly what he said.. but just for kicks i made 280whp on a very hot summer day back then

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaPH22 &raquo;</TD></TR><TR><TD CLASS="quote">I just had my 01 prelude dyno tuned by inline pro in springfield va, (supposed to be the best around) I'm running a greddy turbo on 8lbs of boost on a stock motor with a Hondata S300 3 inch downpipe and 2.5in exhaust with high flow cat that I punched. The car has a front mount intercooler and type s blow off valve. I only made 218 hp isnt this kinda low???? I was expecting 230-240 with the hondata hooked up. The custom exhaust is welded the entire way back from the downpipe to the muffler but its a small magnaflow muffler, do you guys think this small muffler could be killing the power?? I was going to get a hondata heat gasket but they said the gaskets are crap and they tested them on their race cars and they melt down after one race season, with the flanges sticking into the intake manifold actually loosing power once this occurs! Any suggestions here to put down more power besides running more boost.</TD></TR></TABLE>

There's so much missing information there that I don't even know where to start to tell you why your power is so low. Some things to think about:

-What are the specs on the turbo?
-A blow off valve has nothing to do with power.
-What king of wastegate are you running?
-Hondata has to be tuned well to make any power. Did they not produce any more hp from tuning the Hondata?
-2.5" exhaust is pretty small for a turbo engine and that small muffler isn't helping either.
-Is the engine all stock or what?
-Sounds like you needed to do more research before you boosted your car.

Edited because I can't read


Modified by Hawkze_2.3 at 11:07 PM 9/11/2006

 

every car is different eventhough the car has the same setup. in the jacksonracing.com, a s/c prelude with full bolt on and 6 psi jrsc made 234hp 182tq. i have a stock motor with 6 psi jrsc short ram, dc headers and stock exhaust made 206hp 175tq. im happy with it and dont complain.

 

yeah we need more info on your part. but that number is way low for 8lbs. i think you need to tune your hondata or maybe your fuel maps

 

soo many unknowns.....

did you get a super street yellow pages turbo kit, or did you take the time to research the parts needed and build it to your needs?

 

I have done my research believe me and its a hondata heat gasket not head gasket. This shop is well known and they have the fastest S2000 in the country right now. The car is tuned and made 218hp and 200tq the muffler may be killing the power a little, I could go 3 in exhaust then the car will prob spike beyond 8lbs of boost. The car runs great and even with a lsd doesnt get the greatest traction, i was just thinking the car should be putting down like 230ish hp

 

no its a full greddy turbo kit

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaPH22 &raquo;</TD></TR><TR><TD CLASS="quote">i was just thinking the car should be putting down like 230ish hp</TD></TR></TABLE>

this is where people go wrong. What you get is what you get. what kind of dyno was this? What was the correction factor?

 

I think I found your problem.


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaPH22 &raquo;</TD></TR><TR><TD CLASS="quote">full greddy turbo kit</TD></TR></TABLE>

 

theres nothing wrong with a greddy turbo kit as long as you dont use the blue box.

 

The reliability it ok but the power is notoriously bad.

 

friend of mine ran 13.1 in the 1/4 mile with it. I dont see that very bad for being a quick response turbo kit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaPH22 &raquo;</TD></TR><TR><TD CLASS="quote">I have done my research believe me and its a hondata heat gasket not head gasket.</TD></TR></TABLE>

Hell, I'm sorry I read that wrong. They still don't melt though.

 

i dont mean to knock inline pro, and i myself have never used them, but around my neck of the woods in virginia i was always told to stay away from them for tuning, ive heard my share of horror stories but who hasnt, could be your setup maybe not, if you eliminate the setup as the problem, look in the tuner directory, look up brian arbogast, and try to get in touch with him, i myself, and many people i kno have nothing but good things to say about the guy. So if you end up looking for another tuner check him or jason hunt at ultimate out- also i believe ar fab in winchester is pulling some good reliable numbers out of thier cars, so if i were you ide get in touch with all three and get an opinion on what they could do with your setup

 

how about a dyno sheet with af ratio on it. that would be a good start, and ya those numbers seem low, but i don't know much about the greddy kits. done a compression and leak down test on ur motor lately?

just as a reference, i made 301 whp on 10 psi on my old stock block and custom turbo setup, back in the day

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by l2yanE &raquo;</TD></TR><TR><TD CLASS="quote">i dont mean to knock inline pro, and i myself have never used them, but around my neck of the woods in virginia i was always told to stay away from them for tuning, ive heard my share of horror stories but who hasnt,</TD></TR></TABLE>

you shouldnt post these things on the internet when you dont know from personal experience

 

your frield ran a 13.1 98vtec with a 5th gen lude? how many lbs of boost was he running? I will try to post up my dyno in the next couple days

 

the motor is good only has 45k miles on it

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HondaPH22 &raquo;</TD></TR><TR><TD CLASS="quote">the motor is good only has 45k miles on it</TD></TR></TABLE>

milages has nothing to do with how healthy the motor is...


/end yourself

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">

you shouldnt post these things on the internet when you dont know from personal experience</TD></TR></TABLE>

I heard I have the biggest d**k in the world.

It's now on the internet so it must be true.


But, yeah, I wouldnt make any assumptions till you look deeply into you dyno plot...

 

do you think running a 3in downpipe into a 2.5 in exhaust could hurt it?

 

Yeah, your turbo will probably catch on fire.

No.. not at all.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Attaus &raquo;</TD></TR><TR><TD CLASS="quote">Yeah, your turbo will probably catch on fire.

No.. not at all.</TD></TR></TABLE>

i wouldnt be too sure. i know its a completely different application but i went from 2.5 header collector to a 2in exahust and it killed my power but good. the car performed noticably worse than stock. opened up the rest of the exahust to 2.5 and voila!! great power.