Who runs Harvey's Ported Headers on a Classic ? Opinions please.
18 September 2011, 03:51 PM
#31
i have a sc46 harvey and tubulars how much better will spool be if i changed to one of you special uppipes?micks car is impressive so i may have to get one if it makes that much difference 
18 September 2011, 03:59 PM
#34
If your on GT2 spec headers and buy one of Harvey's special uppipe's you will not regret it mate,very good value for money considering the gain
Oh and more torque not that yours needs it so I see from the billet turbo thread,good result fella,you must be well chuffed
Oh and more torque not that yours needs it so I see from the billet turbo thread,good result fella,you must be well chuffed
18 September 2011, 04:21 PM
#37
that depends.there is more to come from the sc46 so for me the sc46 is the better option.im at 1.6 bar at the mo and looking into 6 speeds or ppgs so i can maximise the 46.it will be interesting to see the spool on the sc46 with the harvey uppipe like glenn has on his sc42.the 42 is an epic turbo though but for me the 46 suits perfectly
18 September 2011, 04:43 PM
#38
Problem you may get Lee is torque increases which is gear box killer
Looked at your graph and spools as mine did before Harvey s stuff was fitted and mapped in Lee and 1 bar comes in alot quicker pal
My syvecs holds all that info and can be retrieved by mapper
Looked at your graph and spools as mine did before Harvey s stuff was fitted and mapped in Lee and 1 bar comes in alot quicker pal
My syvecs holds all that info and can be retrieved by mapper
19 September 2011, 09:10 AM
#44
hey guys, hope you dont mind me butting in on this thread but ive got some harvey ported headers with an up pipe for an md321h but i have a 20g, my mate has the tubular headers (2bolt) and a 20g harvey upipe but running an md321h so logic dictates that we just swap up pipes, right?
19 September 2011, 10:50 AM
#45
To be serious, if it was not around 350 rpm minimum spool gain I would be looking to find the reason why.Every car is different and the mapper has an influence on the result.
These are only figures. The facts are, as experienced by those that had the originally supplied uppipe on their car and THEN swapped to my trick uppipe with mapping, have ALL experienced improved spool, better response and more torque right across the rev range.
The difference the trick uppipe makes is such that you MUST remap when the trick uppipe is fitted. The reason being, appart from getting the best from it is simply that you are boosting noticably earlier and need more fuel in that area of the map.
There are two three bolt trick uppipes specifically intended for use with GT2 Spec tubular header sets. I match the uppipe to your turbo and spec and you tell me if you want a boss in the uppipe for EGT sensor. Many mappers have already commented on the effectiveness of these trick uppipes including Bob Rawle, Duncan Dynax, Steve Simpson etc. I have supplied them as far away as the USA, Australia, South Africa, Middle East, Cyprus, Malta, Slovenia, all over Europe, Ireland and Scandinavia. I have never had a complaint regards not doing what I said it would do and one competition customer actually said, "Don't tell anybody. It actually gives me an unfair advantage.
"Stainless steel, slip jointed, DEI heat wrapped with five new Subaru studs. Price £149 each. Delivery £12.50 next day or we fit for £75 fixed price.
Paypal or bank transfer only.
Ryan : Thanks for your kind words and the information you added to the thread. Most header sets including the original cast Subaru are two bolt flange. For these I do ported headers and matched uppipes. Developed using flow bench test equipment and lots of on road testing just as the trick uppipe above. There are six uppipes in the two bolt range and I match the appropriate uppipe to the turbo and engine spec in use. Obviously one uppipe design cannot handle the wide range of turbos and modifications. Details as above. £139 each.
19 September 2011, 11:50 AM
#46
i dont know harvey from jack , but i trust his word. and what others have said about him . and as such have bought of him without a second thought !
cheers harvey !
cheers harvey !
19 September 2011, 08:06 PM
#49
I cannot say exactly. It might be 444 rpm earlier spool to 1 bar in 4th gear. There again it could be 555 rpm or if you are unlucky, only 365 rpm improvement. To be serious, if it was not around 350 rpm minimum spool gain I would be looking to find the reason why.
Every car is different and the mapper has an influence on the result.
These are only figures. The facts are, as experienced by those that had the originally supplied uppipe on their car and THEN swapped to my trick uppipe with mapping, have ALL experienced improved spool, better response and more torque right across the rev range.
The difference the trick uppipe makes is such that you MUST remap when the trick uppipe is fitted. The reason being, appart from getting the best from it is simply that you are boosting noticably earlier and need more fuel in that area of the map.
There are two three bolt trick uppipes specifically intended for use with GT2 Spec tubular header sets. I match the uppipe to your turbo and spec and you tell me if you want a boss in the uppipe for EGT sensor. Many mappers have already commented on the effectiveness of these trick uppipes including Bob Rawle, Duncan Dynax, Steve Simpson etc. I have supplied them as far away as the USA, Australia, South Africa, Middle East, Cyprus, Malta, Slovenia, all over Europe, Ireland and Scandinavia. I have never had a complaint regards not doing what I said it would do and one competition customer actually said, "Don't tell anybody. It actually gives me an unfair advantage."
Stainless steel, slip jointed, DEI heat wrapped with five new Subaru studs. Price £149 each. Delivery £12.50 next day or we fit for £75 fixed price.
Paypal or bank transfer only.
Ryan : Thanks for your kind words and the information you added to the thread. Most header sets including the original cast Subaru are two bolt flange. For these I do ported headers and matched uppipes. Developed using flow bench test equipment and lots of on road testing just as the trick uppipe above. There are six uppipes in the two bolt range and I match the appropriate uppipe to the turbo and engine spec in use. Obviously one uppipe design cannot handle the wide range of turbos and modifications. Details as above. £139 each.
To be serious, if it was not around 350 rpm minimum spool gain I would be looking to find the reason why.Every car is different and the mapper has an influence on the result.
These are only figures. The facts are, as experienced by those that had the originally supplied uppipe on their car and THEN swapped to my trick uppipe with mapping, have ALL experienced improved spool, better response and more torque right across the rev range.
The difference the trick uppipe makes is such that you MUST remap when the trick uppipe is fitted. The reason being, appart from getting the best from it is simply that you are boosting noticably earlier and need more fuel in that area of the map.
There are two three bolt trick uppipes specifically intended for use with GT2 Spec tubular header sets. I match the uppipe to your turbo and spec and you tell me if you want a boss in the uppipe for EGT sensor. Many mappers have already commented on the effectiveness of these trick uppipes including Bob Rawle, Duncan Dynax, Steve Simpson etc. I have supplied them as far away as the USA, Australia, South Africa, Middle East, Cyprus, Malta, Slovenia, all over Europe, Ireland and Scandinavia. I have never had a complaint regards not doing what I said it would do and one competition customer actually said, "Don't tell anybody. It actually gives me an unfair advantage.
"Stainless steel, slip jointed, DEI heat wrapped with five new Subaru studs. Price £149 each. Delivery £12.50 next day or we fit for £75 fixed price.
Paypal or bank transfer only.
Ryan : Thanks for your kind words and the information you added to the thread. Most header sets including the original cast Subaru are two bolt flange. For these I do ported headers and matched uppipes. Developed using flow bench test equipment and lots of on road testing just as the trick uppipe above. There are six uppipes in the two bolt range and I match the appropriate uppipe to the turbo and engine spec in use. Obviously one uppipe design cannot handle the wide range of turbos and modifications. Details as above. £139 each.
20 September 2011, 09:48 AM
#50
Cheers macmac and Ryan.
ronjeramy : Would you need a remap after fitting Harveys ported headers? Currently running a decat exhaust and rcm induction on a simtek
You can fit my ported headers and matched uppipe without a remap and you will notice a difference in that the car will be crisper, more willing and breathe better, especially top end. Efficiency has been improved. However, mapping will give you the best out of what you have. When mapping after changing to ported headers fuel is usually added because the breating (gas flow in the headers) is greatly improved and the turbo needs more fuel earlier at the spool point. Ignition can be advanced as required giving more torque.
With the trick 3 bolt uppipe the objective is somewhat different and the change much more dramatic in terms of spool so mapping is a must to get the right fuel in much earlier. The actual results are very much influenced by the mapping.
ronjeramy : Would you need a remap after fitting Harveys ported headers? Currently running a decat exhaust and rcm induction on a simtek
You can fit my ported headers and matched uppipe without a remap and you will notice a difference in that the car will be crisper, more willing and breathe better, especially top end. Efficiency has been improved. However, mapping will give you the best out of what you have. When mapping after changing to ported headers fuel is usually added because the breating (gas flow in the headers) is greatly improved and the turbo needs more fuel earlier at the spool point. Ignition can be advanced as required giving more torque.
With the trick 3 bolt uppipe the objective is somewhat different and the change much more dramatic in terms of spool so mapping is a must to get the right fuel in much earlier. The actual results are very much influenced by the mapping.
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